19877560

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{7417}}^1$

素因数の和:7495

約数の個数: 32

約数和(自身を含む): 45398160

約数和(自身を除く): 25520600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 2680, 7417, 14834, 29668, 37085, 59336, 74170, 148340, 296680, 496939, 993878, 1987756, 2484695, 3975512, 4969390, 9938780, 19877560]

約数ペア:

[(1, 19877560), (2, 9938780), (4, 4969390), (5, 3975512), (8, 2484695), (10, 1987756), (20, 993878), (40, 496939), (67, 296680), (134, 148340), (268, 74170), (335, 59336), (536, 37085), (670, 29668), (1340, 14834), (2680, 7417)]