18402800

素因数分解:

$2^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{3539}}^1$

素因数の和:3570

約数の個数: 60

約数和(自身を含む): 47627160

約数和(自身を除く): 29224360

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, 3539, 5200, 7078, 14156, 17695, 28312, 35390, 46007, 56624, 70780, 88475, 92014, 141560, 176950, 184028, 230035, 283120, 353900, 368056, 460070, 707800, 736112, 920140, 1150175, 1415600, 1840280, 2300350, 3680560, 4600700, 9201400, 18402800]

約数ペア:

[(1, 18402800), (2, 9201400), (4, 4600700), (5, 3680560), (8, 2300350), (10, 1840280), (13, 1415600), (16, 1150175), (20, 920140), (25, 736112), (26, 707800), (40, 460070), (50, 368056), (52, 353900), (65, 283120), (80, 230035), (100, 184028), (104, 176950), (130, 141560), (200, 92014), (208, 88475), (260, 70780), (325, 56624), (400, 46007), (520, 35390), (650, 28312), (1040, 17695), (1300, 14156), (2600, 7078), (3539, 5200)]