21000201240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{179}}^1\times {\mathrm{10079}}^1$

素因数の和:10369

約数の個数: 128

約数和(自身を含む): 64012032000

約数和(自身を除く): 43011830760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 97, 120, 179, 194, 291, 358, 388, 485, 537, 582, 716, 776, 895, 970, 1074, 1164, 1432, 1455, 1790, 1940, 2148, 2328, 2685, 2910, 3580, 3880, 4296, 5370, 5820, 7160, 10079, 10740, 11640, 17363, 20158, 21480, 30237, 34726, 40316, 50395, 52089, 60474, 69452, 80632, 86815, 100790, 104178, 120948, 138904, 151185, 173630, 201580, 208356, 241896, 260445, 302370, 347260, 403160, 416712, 520890, 604740, 694520, 977663, 1041780, 1209480, 1804141, 1955326, 2083560, 2932989, 3608282, 3910652, 4888315, 5412423, 5865978, 7216564, 7821304, 9020705, 9776630, 10824846, 11731956, 14433128, 14664945, 18041410, 19553260, 21649692, 23463912, 27062115, 29329890, 36082820, 39106520, 43299384, 54124230, 58659780, 72165640, 108248460, 117319560, 175001677, 216496920, 350003354, 525005031, 700006708, 875008385, 1050010062, 1400013416, 1750016770, 2100020124, 2625025155, 3500033540, 4200040248, 5250050310, 7000067080, 10500100620, 21000201240]

約数ペア:

[(1, 21000201240), (2, 10500100620), (3, 7000067080), (4, 5250050310), (5, 4200040248), (6, 3500033540), (8, 2625025155), (10, 2100020124), (12, 1750016770), (15, 1400013416), (20, 1050010062), (24, 875008385), (30, 700006708), (40, 525005031), (60, 350003354), (97, 216496920), (120, 175001677), (179, 117319560), (194, 108248460), (291, 72165640), (358, 58659780), (388, 54124230), (485, 43299384), (537, 39106520), (582, 36082820), (716, 29329890), (776, 27062115), (895, 23463912), (970, 21649692), (1074, 19553260), (1164, 18041410), (1432, 14664945), (1455, 14433128), (1790, 11731956), (1940, 10824846), (2148, 9776630), (2328, 9020705), (2685, 7821304), (2910, 7216564), (3580, 5865978), (3880, 5412423), (4296, 4888315), (5370, 3910652), (5820, 3608282), (7160, 2932989), (10079, 2083560), (10740, 1955326), (11640, 1804141), (17363, 1209480), (20158, 1041780), (21480, 977663), (30237, 694520), (34726, 604740), (40316, 520890), (50395, 416712), (52089, 403160), (60474, 347260), (69452, 302370), (80632, 260445), (86815, 241896), (100790, 208356), (104178, 201580), (120948, 173630), (138904, 151185)]