21938220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{397}}^1$

素因数の和:719

約数の個数: 72

約数和(自身を含む): 66930864

約数和(自身を除く): 44992644

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 307, 397, 614, 794, 921, 1191, 1228, 1535, 1588, 1842, 1985, 2382, 2763, 3070, 3573, 3684, 3970, 4605, 4764, 5526, 5955, 6140, 7146, 7940, 9210, 11052, 11910, 13815, 14292, 17865, 18420, 23820, 27630, 35730, 55260, 71460, 121879, 243758, 365637, 487516, 609395, 731274, 1096911, 1218790, 1462548, 1828185, 2193822, 2437580, 3656370, 4387644, 5484555, 7312740, 10969110, 21938220]

約数ペア:

[(1, 21938220), (2, 10969110), (3, 7312740), (4, 5484555), (5, 4387644), (6, 3656370), (9, 2437580), (10, 2193822), (12, 1828185), (15, 1462548), (18, 1218790), (20, 1096911), (30, 731274), (36, 609395), (45, 487516), (60, 365637), (90, 243758), (180, 121879), (307, 71460), (397, 55260), (614, 35730), (794, 27630), (921, 23820), (1191, 18420), (1228, 17865), (1535, 14292), (1588, 13815), (1842, 11910), (1985, 11052), (2382, 9210), (2763, 7940), (3070, 7146), (3573, 6140), (3684, 5955), (3970, 5526), (4605, 4764)]