20911920

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87133}}^1$

素因数の和:87149

約数の個数: 40

約数和(自身を含む): 64827696

約数和(自身を除く): 43915776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87133, 174266, 261399, 348532, 435665, 522798, 697064, 871330, 1045596, 1306995, 1394128, 1742660, 2091192, 2613990, 3485320, 4182384, 5227980, 6970640, 10455960, 20911920]

約数ペア:

[(1, 20911920), (2, 10455960), (3, 6970640), (4, 5227980), (5, 4182384), (6, 3485320), (8, 2613990), (10, 2091192), (12, 1742660), (15, 1394128), (16, 1306995), (20, 1045596), (24, 871330), (30, 697064), (40, 522798), (48, 435665), (60, 348532), (80, 261399), (120, 174266), (240, 87133)]