19721940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{46957}}^1$

素因数の和:46976

約数の個数: 48

約数和(自身を含む): 63111552

約数和(自身を除く): 43389612

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, 46957, 93914, 140871, 187828, 234785, 281742, 328699, 469570, 563484, 657398, 704355, 939140, 986097, 1314796, 1408710, 1643495, 1972194, 2817420, 3286990, 3944388, 4930485, 6573980, 9860970, 19721940]

約数ペア:

[(1, 19721940), (2, 9860970), (3, 6573980), (4, 4930485), (5, 3944388), (6, 3286990), (7, 2817420), (10, 1972194), (12, 1643495), (14, 1408710), (15, 1314796), (20, 986097), (21, 939140), (28, 704355), (30, 657398), (35, 563484), (42, 469570), (60, 328699), (70, 281742), (84, 234785), (105, 187828), (140, 140871), (210, 93914), (420, 46957)]