1557257728

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{5441}}^1$

素因数の和:5515

約数の個数: 80

約数和(自身を含む): 3429374256

約数和(自身を除く): 1872116528

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 43, 52, 64, 86, 104, 128, 172, 208, 256, 344, 416, 512, 559, 688, 832, 1118, 1376, 1664, 2236, 2752, 3328, 4472, 5441, 5504, 6656, 8944, 10882, 11008, 17888, 21764, 22016, 35776, 43528, 70733, 71552, 87056, 141466, 143104, 174112, 233963, 282932, 286208, 348224, 467926, 565864, 696448, 935852, 1131728, 1392896, 1871704, 2263456, 2785792, 3041519, 3743408, 4526912, 6083038, 7486816, 9053824, 12166076, 14973632, 18107648, 24332152, 29947264, 36215296, 48664304, 59894528, 97328608, 119789056, 194657216, 389314432, 778628864, 1557257728]

約数ペア:

[(1, 1557257728), (2, 778628864), (4, 389314432), (8, 194657216), (13, 119789056), (16, 97328608), (26, 59894528), (32, 48664304), (43, 36215296), (52, 29947264), (64, 24332152), (86, 18107648), (104, 14973632), (128, 12166076), (172, 9053824), (208, 7486816), (256, 6083038), (344, 4526912), (416, 3743408), (512, 3041519), (559, 2785792), (688, 2263456), (832, 1871704), (1118, 1392896), (1376, 1131728), (1664, 935852), (2236, 696448), (2752, 565864), (3328, 467926), (4472, 348224), (5441, 286208), (5504, 282932), (6656, 233963), (8944, 174112), (10882, 143104), (11008, 141466), (17888, 87056), (21764, 71552), (22016, 70733), (35776, 43528)]