15956980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{4721}}^1$

素因数の和:4756

約数の個数: 36

約数和(自身を含む): 36293292

約数和(自身を除く): 20336312

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 3380, 4721, 9442, 18884, 23605, 47210, 61373, 94420, 122746, 245492, 306865, 613730, 797849, 1227460, 1595698, 3191396, 3989245, 7978490, 15956980]

約数ペア:

[(1, 15956980), (2, 7978490), (4, 3989245), (5, 3191396), (10, 1595698), (13, 1227460), (20, 797849), (26, 613730), (52, 306865), (65, 245492), (130, 122746), (169, 94420), (260, 61373), (338, 47210), (676, 23605), (845, 18884), (1690, 9442), (3380, 4721)]