21211648

素因数分解:

$2^9\times {\mathrm{17}}^1\times {\mathrm{2437}}^1$

素因数の和:2472

約数の個数: 40

約数和(自身を含む): 44893332

約数和(自身を除く): 23681684

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 64, 68, 128, 136, 256, 272, 512, 544, 1088, 2176, 2437, 4352, 4874, 8704, 9748, 19496, 38992, 41429, 77984, 82858, 155968, 165716, 311936, 331432, 623872, 662864, 1247744, 1325728, 2651456, 5302912, 10605824, 21211648]

約数ペア:

[(1, 21211648), (2, 10605824), (4, 5302912), (8, 2651456), (16, 1325728), (17, 1247744), (32, 662864), (34, 623872), (64, 331432), (68, 311936), (128, 165716), (136, 155968), (256, 82858), (272, 77984), (512, 41429), (544, 38992), (1088, 19496), (2176, 9748), (2437, 8704), (4352, 4874)]