21281867040

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{204319}}^1$

素因数の和:204375

約数の個数: 192

約数和(自身を含む): 79086551040

約数和(自身を除く): 57804684000

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 31, 32, 35, 40, 42, 48, 56, 60, 62, 70, 80, 84, 93, 96, 105, 112, 120, 124, 140, 155, 160, 168, 186, 210, 217, 224, 240, 248, 280, 310, 336, 372, 420, 434, 465, 480, 496, 560, 620, 651, 672, 744, 840, 868, 930, 992, 1085, 1120, 1240, 1302, 1488, 1680, 1736, 1860, 2170, 2480, 2604, 2976, 3255, 3360, 3472, 3720, 4340, 4960, 5208, 6510, 6944, 7440, 8680, 10416, 13020, 14880, 17360, 20832, 26040, 34720, 52080, 104160, 204319, 408638, 612957, 817276, 1021595, 1225914, 1430233, 1634552, 2043190, 2451828, 2860466, 3064785, 3269104, 4086380, 4290699, 4903656, 5720932, 6129570, 6333889, 6538208, 7151165, 8172760, 8581398, 9807312, 11441864, 12259140, 12667778, 14302330, 16345520, 17162796, 19001667, 19614624, 21453495, 22883728, 24518280, 25335556, 28604660, 31669445, 32691040, 34325592, 38003334, 42906990, 44337223, 45767456, 49036560, 50671112, 57209320, 63338890, 68651184, 76006668, 85813980, 88674446, 95008335, 98073120, 101342224, 114418640, 126677780, 133011669, 137302368, 152013336, 171627960, 177348892, 190016670, 202684448, 221686115, 228837280, 253355560, 266023338, 304026672, 343255920, 354697784, 380033340, 443372230, 506711120, 532046676, 608053344, 665058345, 686511840, 709395568, 760066680, 886744460, 1013422240, 1064093352, 1330116690, 1418791136, 1520133360, 1773488920, 2128186704, 2660233380, 3040266720, 3546977840, 4256373408, 5320466760, 7093955680, 10640933520, 21281867040]

約数ペア:

[(1, 21281867040), (2, 10640933520), (3, 7093955680), (4, 5320466760), (5, 4256373408), (6, 3546977840), (7, 3040266720), (8, 2660233380), (10, 2128186704), (12, 1773488920), (14, 1520133360), (15, 1418791136), (16, 1330116690), (20, 1064093352), (21, 1013422240), (24, 886744460), (28, 760066680), (30, 709395568), (31, 686511840), (32, 665058345), (35, 608053344), (40, 532046676), (42, 506711120), (48, 443372230), (56, 380033340), (60, 354697784), (62, 343255920), (70, 304026672), (80, 266023338), (84, 253355560), (93, 228837280), (96, 221686115), (105, 202684448), (112, 190016670), (120, 177348892), (124, 171627960), (140, 152013336), (155, 137302368), (160, 133011669), (168, 126677780), (186, 114418640), (210, 101342224), (217, 98073120), (224, 95008335), (240, 88674446), (248, 85813980), (280, 76006668), (310, 68651184), (336, 63338890), (372, 57209320), (420, 50671112), (434, 49036560), (465, 45767456), (480, 44337223), (496, 42906990), (560, 38003334), (620, 34325592), (651, 32691040), (672, 31669445), (744, 28604660), (840, 25335556), (868, 24518280), (930, 22883728), (992, 21453495), (1085, 19614624), (1120, 19001667), (1240, 17162796), (1302, 16345520), (1488, 14302330), (1680, 12667778), (1736, 12259140), (1860, 11441864), (2170, 9807312), (2480, 8581398), (2604, 8172760), (2976, 7151165), (3255, 6538208), (3360, 6333889), (3472, 6129570), (3720, 5720932), (4340, 4903656), (4960, 4290699), (5208, 4086380), (6510, 3269104), (6944, 3064785), (7440, 2860466), (8680, 2451828), (10416, 2043190), (13020, 1634552), (14880, 1430233), (17360, 1225914), (20832, 1021595), (26040, 817276), (34720, 612957), (52080, 408638), (104160, 204319)]