27979980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:364

約数の個数: 144

約数和(自身を含む): 94381056

約数和(自身を除く): 66401076

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 31, 35, 42, 49, 60, 62, 70, 84, 93, 98, 105, 124, 140, 147, 155, 186, 196, 210, 217, 245, 294, 307, 310, 372, 420, 434, 465, 490, 588, 614, 620, 651, 735, 868, 921, 930, 980, 1085, 1228, 1302, 1470, 1519, 1535, 1842, 1860, 2149, 2170, 2604, 2940, 3038, 3070, 3255, 3684, 4298, 4340, 4557, 4605, 6076, 6140, 6447, 6510, 7595, 8596, 9114, 9210, 9517, 10745, 12894, 13020, 15043, 15190, 18228, 18420, 19034, 21490, 22785, 25788, 28551, 30086, 30380, 32235, 38068, 42980, 45129, 45570, 47585, 57102, 60172, 64470, 66619, 75215, 90258, 91140, 95170, 114204, 128940, 133238, 142755, 150430, 180516, 190340, 199857, 225645, 266476, 285510, 300860, 333095, 399714, 451290, 466333, 571020, 666190, 799428, 902580, 932666, 999285, 1332380, 1398999, 1865332, 1998570, 2331665, 2797998, 3997140, 4663330, 5595996, 6994995, 9326660, 13989990, 27979980]

約数ペア:

[(1, 27979980), (2, 13989990), (3, 9326660), (4, 6994995), (5, 5595996), (6, 4663330), (7, 3997140), (10, 2797998), (12, 2331665), (14, 1998570), (15, 1865332), (20, 1398999), (21, 1332380), (28, 999285), (30, 932666), (31, 902580), (35, 799428), (42, 666190), (49, 571020), (60, 466333), (62, 451290), (70, 399714), (84, 333095), (93, 300860), (98, 285510), (105, 266476), (124, 225645), (140, 199857), (147, 190340), (155, 180516), (186, 150430), (196, 142755), (210, 133238), (217, 128940), (245, 114204), (294, 95170), (307, 91140), (310, 90258), (372, 75215), (420, 66619), (434, 64470), (465, 60172), (490, 57102), (588, 47585), (614, 45570), (620, 45129), (651, 42980), (735, 38068), (868, 32235), (921, 30380), (930, 30086), (980, 28551), (1085, 25788), (1228, 22785), (1302, 21490), (1470, 19034), (1519, 18420), (1535, 18228), (1842, 15190), (1860, 15043), (2149, 13020), (2170, 12894), (2604, 10745), (2940, 9517), (3038, 9210), (3070, 9114), (3255, 8596), (3684, 7595), (4298, 6510), (4340, 6447), (4557, 6140), (4605, 6076)]