20123992920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{26539}}^1$

素因数の和:26713

約数の個数: 128

約数和(自身を含む): 61912512000

約数和(自身を除く): 41788519080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 89, 120, 142, 178, 213, 267, 284, 355, 356, 426, 445, 534, 568, 710, 712, 852, 890, 1065, 1068, 1335, 1420, 1704, 1780, 2130, 2136, 2670, 2840, 3560, 4260, 5340, 6319, 8520, 10680, 12638, 18957, 25276, 26539, 31595, 37914, 50552, 53078, 63190, 75828, 79617, 94785, 106156, 126380, 132695, 151656, 159234, 189570, 212312, 252760, 265390, 318468, 379140, 398085, 530780, 636936, 758280, 796170, 1061560, 1592340, 1884269, 2361971, 3184680, 3768538, 4723942, 5652807, 7085913, 7537076, 9421345, 9447884, 11305614, 11809855, 14171826, 15074152, 18842690, 18895768, 22611228, 23619710, 28264035, 28343652, 35429565, 37685380, 45222456, 47239420, 56528070, 56687304, 70859130, 75370760, 94478840, 113056140, 141718260, 167699941, 226112280, 283436520, 335399882, 503099823, 670799764, 838499705, 1006199646, 1341599528, 1676999410, 2012399292, 2515499115, 3353998820, 4024798584, 5030998230, 6707997640, 10061996460, 20123992920]

約数ペア:

[(1, 20123992920), (2, 10061996460), (3, 6707997640), (4, 5030998230), (5, 4024798584), (6, 3353998820), (8, 2515499115), (10, 2012399292), (12, 1676999410), (15, 1341599528), (20, 1006199646), (24, 838499705), (30, 670799764), (40, 503099823), (60, 335399882), (71, 283436520), (89, 226112280), (120, 167699941), (142, 141718260), (178, 113056140), (213, 94478840), (267, 75370760), (284, 70859130), (355, 56687304), (356, 56528070), (426, 47239420), (445, 45222456), (534, 37685380), (568, 35429565), (710, 28343652), (712, 28264035), (852, 23619710), (890, 22611228), (1065, 18895768), (1068, 18842690), (1335, 15074152), (1420, 14171826), (1704, 11809855), (1780, 11305614), (2130, 9447884), (2136, 9421345), (2670, 7537076), (2840, 7085913), (3560, 5652807), (4260, 4723942), (5340, 3768538), (6319, 3184680), (8520, 2361971), (10680, 1884269), (12638, 1592340), (18957, 1061560), (25276, 796170), (26539, 758280), (31595, 636936), (37914, 530780), (50552, 398085), (53078, 379140), (63190, 318468), (75828, 265390), (79617, 252760), (94785, 212312), (106156, 189570), (126380, 159234), (132695, 151656)]