13123456

素因数分解:

$2^7\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:231

約数の個数: 64

約数和(自身を含む): 28604880

約数和(自身を除く): 15481424

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 64, 68, 74, 128, 136, 148, 163, 272, 296, 326, 544, 592, 629, 652, 1088, 1184, 1258, 1304, 2176, 2368, 2516, 2608, 2771, 4736, 5032, 5216, 5542, 6031, 10064, 10432, 11084, 12062, 20128, 20864, 22168, 24124, 40256, 44336, 48248, 80512, 88672, 96496, 102527, 177344, 192992, 205054, 354688, 385984, 410108, 771968, 820216, 1640432, 3280864, 6561728, 13123456]

約数ペア:

[(1, 13123456), (2, 6561728), (4, 3280864), (8, 1640432), (16, 820216), (17, 771968), (32, 410108), (34, 385984), (37, 354688), (64, 205054), (68, 192992), (74, 177344), (128, 102527), (136, 96496), (148, 88672), (163, 80512), (272, 48248), (296, 44336), (326, 40256), (544, 24124), (592, 22168), (629, 20864), (652, 20128), (1088, 12062), (1184, 11084), (1258, 10432), (1304, 10064), (2176, 6031), (2368, 5542), (2516, 5216), (2608, 5032), (2771, 4736)]