18756400

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3607}}^1$

素因数の和:3638

約数の個数: 60

約数和(自身を含む): 48542032

約数和(自身を除く): 29785632

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 40, 50, 52, 65, 80, 100, 104, 130, 200, 208, 260, 325, 400, 520, 650, 1040, 1300, 2600, 3607, 5200, 7214, 14428, 18035, 28856, 36070, 46891, 57712, 72140, 90175, 93782, 144280, 180350, 187564, 234455, 288560, 360700, 375128, 468910, 721400, 750256, 937820, 1172275, 1442800, 1875640, 2344550, 3751280, 4689100, 9378200, 18756400]

約数ペア:

[(1, 18756400), (2, 9378200), (4, 4689100), (5, 3751280), (8, 2344550), (10, 1875640), (13, 1442800), (16, 1172275), (20, 937820), (25, 750256), (26, 721400), (40, 468910), (50, 375128), (52, 360700), (65, 288560), (80, 234455), (100, 187564), (104, 180350), (130, 144280), (200, 93782), (208, 90175), (260, 72140), (325, 57712), (400, 46891), (520, 36070), (650, 28856), (1040, 18035), (1300, 14428), (2600, 7214), (3607, 5200)]