20813312

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:143

約数の個数: 80

約数和(自身を含む): 46403280

約数和(自身を除く): 25589968

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 53, 59, 64, 104, 106, 118, 128, 208, 212, 236, 256, 416, 424, 472, 512, 689, 767, 832, 848, 944, 1378, 1534, 1664, 1696, 1888, 2756, 3068, 3127, 3328, 3392, 3776, 5512, 6136, 6254, 6656, 6784, 7552, 11024, 12272, 12508, 13568, 15104, 22048, 24544, 25016, 27136, 30208, 40651, 44096, 49088, 50032, 81302, 88192, 98176, 100064, 162604, 176384, 196352, 200128, 325208, 352768, 392704, 400256, 650416, 800512, 1300832, 1601024, 2601664, 5203328, 10406656, 20813312]

約数ペア:

[(1, 20813312), (2, 10406656), (4, 5203328), (8, 2601664), (13, 1601024), (16, 1300832), (26, 800512), (32, 650416), (52, 400256), (53, 392704), (59, 352768), (64, 325208), (104, 200128), (106, 196352), (118, 176384), (128, 162604), (208, 100064), (212, 98176), (236, 88192), (256, 81302), (416, 50032), (424, 49088), (472, 44096), (512, 40651), (689, 30208), (767, 27136), (832, 25016), (848, 24544), (944, 22048), (1378, 15104), (1534, 13568), (1664, 12508), (1696, 12272), (1888, 11024), (2756, 7552), (3068, 6784), (3127, 6656), (3328, 6254), (3392, 6136), (3776, 5512)]