21040320

素因数分解:

$2^6\times 3^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:159

約数の個数: 224

約数和(自身を含む): 79589376

約数和(自身を除く): 58549056

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, 64, 70, 80, 84, 93, 96, 101, 105, 112, 120, 124, 140, 155, 160, 168, 186, 192, 202, 210, 217, 224, 240, 248, 280, 303, 310, 320, 336, 372, 404, 420, 434, 448, 465, 480, 496, 505, 560, 606, 620, 651, 672, 707, 744, 808, 840, 868, 930, 960, 992, 1010, 1085, 1120, 1212, 1240, 1302, 1344, 1414, 1488, 1515, 1616, 1680, 1736, 1860, 1984, 2020, 2121, 2170, 2240, 2424, 2480, 2604, 2828, 2976, 3030, 3131, 3232, 3255, 3360, 3472, 3535, 3720, 4040, 4242, 4340, 4848, 4960, 5208, 5656, 5952, 6060, 6262, 6464, 6510, 6720, 6944, 7070, 7440, 8080, 8484, 8680, 9393, 9696, 9920, 10416, 10605, 11312, 12120, 12524, 13020, 13888, 14140, 14880, 15655, 16160, 16968, 17360, 18786, 19392, 20832, 21210, 21917, 22624, 24240, 25048, 26040, 28280, 29760, 31310, 32320, 33936, 34720, 37572, 41664, 42420, 43834, 45248, 46965, 48480, 50096, 52080, 56560, 62620, 65751, 67872, 69440, 75144, 84840, 87668, 93930, 96960, 100192, 104160, 109585, 113120, 125240, 131502, 135744, 150288, 169680, 175336, 187860, 200384, 208320, 219170, 226240, 250480, 263004, 300576, 328755, 339360, 350672, 375720, 438340, 500960, 526008, 601152, 657510, 678720, 701344, 751440, 876680, 1001920, 1052016, 1315020, 1402688, 1502880, 1753360, 2104032, 2630040, 3005760, 3506720, 4208064, 5260080, 7013440, 10520160, 21040320]

約数ペア:

[(1, 21040320), (2, 10520160), (3, 7013440), (4, 5260080), (5, 4208064), (6, 3506720), (7, 3005760), (8, 2630040), (10, 2104032), (12, 1753360), (14, 1502880), (15, 1402688), (16, 1315020), (20, 1052016), (21, 1001920), (24, 876680), (28, 751440), (30, 701344), (31, 678720), (32, 657510), (35, 601152), (40, 526008), (42, 500960), (48, 438340), (56, 375720), (60, 350672), (62, 339360), (64, 328755), (70, 300576), (80, 263004), (84, 250480), (93, 226240), (96, 219170), (101, 208320), (105, 200384), (112, 187860), (120, 175336), (124, 169680), (140, 150288), (155, 135744), (160, 131502), (168, 125240), (186, 113120), (192, 109585), (202, 104160), (210, 100192), (217, 96960), (224, 93930), (240, 87668), (248, 84840), (280, 75144), (303, 69440), (310, 67872), (320, 65751), (336, 62620), (372, 56560), (404, 52080), (420, 50096), (434, 48480), (448, 46965), (465, 45248), (480, 43834), (496, 42420), (505, 41664), (560, 37572), (606, 34720), (620, 33936), (651, 32320), (672, 31310), (707, 29760), (744, 28280), (808, 26040), (840, 25048), (868, 24240), (930, 22624), (960, 21917), (992, 21210), (1010, 20832), (1085, 19392), (1120, 18786), (1212, 17360), (1240, 16968), (1302, 16160), (1344, 15655), (1414, 14880), (1488, 14140), (1515, 13888), (1616, 13020), (1680, 12524), (1736, 12120), (1860, 11312), (1984, 10605), (2020, 10416), (2121, 9920), (2170, 9696), (2240, 9393), (2424, 8680), (2480, 8484), (2604, 8080), (2828, 7440), (2976, 7070), (3030, 6944), (3131, 6720), (3232, 6510), (3255, 6464), (3360, 6262), (3472, 6060), (3535, 5952), (3720, 5656), (4040, 5208), (4242, 4960), (4340, 4848)]