21352890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54751}}^1$

素因数の和:54774

約数の個数: 32

約数和(自身を含む): 55190016

約数和(自身を除く): 33837126

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 54751, 109502, 164253, 273755, 328506, 547510, 711763, 821265, 1423526, 1642530, 2135289, 3558815, 4270578, 7117630, 10676445, 21352890]

約数ペア:

[(1, 21352890), (2, 10676445), (3, 7117630), (5, 4270578), (6, 3558815), (10, 2135289), (13, 1642530), (15, 1423526), (26, 821265), (30, 711763), (39, 547510), (65, 328506), (78, 273755), (130, 164253), (195, 109502), (390, 54751)]