21495503820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{51179771}}^1$

素因数の和:51179790

約数の個数: 48

約数和(自身を含む): 68785613568

約数和(自身を除く): 47290109748

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 51179771, 102359542, 153539313, 204719084, 255898855, 307078626, 358258397, 511797710, 614157252, 716516794, 767696565, 1023595420, 1074775191, 1433033588, 1535393130, 1791291985, 2149550382, 3070786260, 3582583970, 4299100764, 5373875955, 7165167940, 10747751910, 21495503820]

約数ペア:

[(1, 21495503820), (2, 10747751910), (3, 7165167940), (4, 5373875955), (5, 4299100764), (6, 3582583970), (7, 3070786260), (10, 2149550382), (12, 1791291985), (14, 1535393130), (15, 1433033588), (20, 1074775191), (21, 1023595420), (28, 767696565), (30, 716516794), (35, 614157252), (42, 511797710), (60, 358258397), (70, 307078626), (84, 255898855), (105, 204719084), (140, 153539313), (210, 102359542), (420, 51179771)]