19681792

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{2957}}^1$

素因数の和:2988

約数の個数: 40

約数和(自身を含む): 42364476

約数和(自身を除く): 22682684

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 512, 832, 1664, 2957, 3328, 5914, 6656, 11828, 23656, 38441, 47312, 76882, 94624, 153764, 189248, 307528, 378496, 615056, 756992, 1230112, 1513984, 2460224, 4920448, 9840896, 19681792]

約数ペア:

[(1, 19681792), (2, 9840896), (4, 4920448), (8, 2460224), (13, 1513984), (16, 1230112), (26, 756992), (32, 615056), (52, 378496), (64, 307528), (104, 189248), (128, 153764), (208, 94624), (256, 76882), (416, 47312), (512, 38441), (832, 23656), (1664, 11828), (2957, 6656), (3328, 5914)]