18017720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{281}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 46699200

約数和(自身を除く): 28681480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 229, 280, 281, 458, 562, 916, 1124, 1145, 1405, 1603, 1832, 1967, 2248, 2290, 2810, 3206, 3934, 4580, 5620, 6412, 7868, 8015, 9160, 9835, 11240, 12824, 15736, 16030, 19670, 32060, 39340, 64120, 64349, 78680, 128698, 257396, 321745, 450443, 514792, 643490, 900886, 1286980, 1801772, 2252215, 2573960, 3603544, 4504430, 9008860, 18017720]

約数ペア:

[(1, 18017720), (2, 9008860), (4, 4504430), (5, 3603544), (7, 2573960), (8, 2252215), (10, 1801772), (14, 1286980), (20, 900886), (28, 643490), (35, 514792), (40, 450443), (56, 321745), (70, 257396), (140, 128698), (229, 78680), (280, 64349), (281, 64120), (458, 39340), (562, 32060), (916, 19670), (1124, 16030), (1145, 15736), (1405, 12824), (1603, 11240), (1832, 9835), (1967, 9160), (2248, 8015), (2290, 7868), (2810, 6412), (3206, 5620), (3934, 4580)]