251123456

素因数分解:

$2^8\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3037}}^1$

素因数の和:3089

約数の個数: 72

約数和(自身を含む): 558870480

約数和(自身を除く): 307747024

約数列:

[1, 2, 4, 8, 16, 17, 19, 32, 34, 38, 64, 68, 76, 128, 136, 152, 256, 272, 304, 323, 544, 608, 646, 1088, 1216, 1292, 2176, 2432, 2584, 3037, 4352, 4864, 5168, 6074, 10336, 12148, 20672, 24296, 41344, 48592, 51629, 57703, 82688, 97184, 103258, 115406, 194368, 206516, 230812, 388736, 413032, 461624, 777472, 826064, 923248, 980951, 1652128, 1846496, 1961902, 3304256, 3692992, 3923804, 6608512, 7385984, 7847608, 13217024, 14771968, 15695216, 31390432, 62780864, 125561728, 251123456]

約数ペア:

[(1, 251123456), (2, 125561728), (4, 62780864), (8, 31390432), (16, 15695216), (17, 14771968), (19, 13217024), (32, 7847608), (34, 7385984), (38, 6608512), (64, 3923804), (68, 3692992), (76, 3304256), (128, 1961902), (136, 1846496), (152, 1652128), (256, 980951), (272, 923248), (304, 826064), (323, 777472), (544, 461624), (608, 413032), (646, 388736), (1088, 230812), (1216, 206516), (1292, 194368), (2176, 115406), (2432, 103258), (2584, 97184), (3037, 82688), (4352, 57703), (4864, 51629), (5168, 48592), (6074, 41344), (10336, 24296), (12148, 20672)]