20165361008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{889439}}^1$

素因数の和:889569

約数の個数: 40

約数和(自身を含む): 42461865600

約数和(自身を除く): 22296504592

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 109, 208, 218, 436, 872, 1417, 1744, 2834, 5668, 11336, 22672, 889439, 1778878, 3557756, 7115512, 11562707, 14231024, 23125414, 46250828, 92501656, 96948851, 185003312, 193897702, 387795404, 775590808, 1260335063, 1551181616, 2520670126, 5041340252, 10082680504, 20165361008]

約数ペア:

[(1, 20165361008), (2, 10082680504), (4, 5041340252), (8, 2520670126), (13, 1551181616), (16, 1260335063), (26, 775590808), (52, 387795404), (104, 193897702), (109, 185003312), (208, 96948851), (218, 92501656), (436, 46250828), (872, 23125414), (1417, 14231024), (1744, 11562707), (2834, 7115512), (5668, 3557756), (11336, 1778878), (22672, 889439)]