18928756

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{151}}^1$

素因数の和:221

約数の個数: 72

約数和(自身を含む): 43019648

約数和(自身を除く): 24090892

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 37, 44, 74, 77, 121, 148, 151, 154, 242, 259, 302, 308, 407, 484, 518, 604, 814, 847, 1036, 1057, 1628, 1661, 1694, 2114, 2849, 3322, 3388, 4228, 4477, 5587, 5698, 6644, 8954, 11174, 11396, 11627, 17908, 18271, 22348, 23254, 31339, 36542, 39109, 46508, 61457, 62678, 73084, 78218, 122914, 125356, 127897, 156436, 245828, 255794, 430199, 511588, 676027, 860398, 1352054, 1720796, 2704108, 4732189, 9464378, 18928756]

約数ペア:

[(1, 18928756), (2, 9464378), (4, 4732189), (7, 2704108), (11, 1720796), (14, 1352054), (22, 860398), (28, 676027), (37, 511588), (44, 430199), (74, 255794), (77, 245828), (121, 156436), (148, 127897), (151, 125356), (154, 122914), (242, 78218), (259, 73084), (302, 62678), (308, 61457), (407, 46508), (484, 39109), (518, 36542), (604, 31339), (814, 23254), (847, 22348), (1036, 18271), (1057, 17908), (1628, 11627), (1661, 11396), (1694, 11174), (2114, 8954), (2849, 6644), (3322, 5698), (3388, 5587), (4228, 4477)]