18905920

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:200

約数の個数: 112

約数和(自身を含む): 50694336

約数和(自身を除く): 31788416

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 41, 44, 55, 64, 80, 82, 88, 110, 131, 160, 164, 176, 205, 220, 262, 320, 328, 352, 410, 440, 451, 524, 655, 656, 704, 820, 880, 902, 1048, 1310, 1312, 1441, 1640, 1760, 1804, 2096, 2255, 2620, 2624, 2882, 3280, 3520, 3608, 4192, 4510, 5240, 5371, 5764, 6560, 7205, 7216, 8384, 9020, 10480, 10742, 11528, 13120, 14410, 14432, 18040, 20960, 21484, 23056, 26855, 28820, 28864, 36080, 41920, 42968, 46112, 53710, 57640, 59081, 72160, 85936, 92224, 107420, 115280, 118162, 144320, 171872, 214840, 230560, 236324, 295405, 343744, 429680, 461120, 472648, 590810, 859360, 945296, 1181620, 1718720, 1890592, 2363240, 3781184, 4726480, 9452960, 18905920]

約数ペア:

[(1, 18905920), (2, 9452960), (4, 4726480), (5, 3781184), (8, 2363240), (10, 1890592), (11, 1718720), (16, 1181620), (20, 945296), (22, 859360), (32, 590810), (40, 472648), (41, 461120), (44, 429680), (55, 343744), (64, 295405), (80, 236324), (82, 230560), (88, 214840), (110, 171872), (131, 144320), (160, 118162), (164, 115280), (176, 107420), (205, 92224), (220, 85936), (262, 72160), (320, 59081), (328, 57640), (352, 53710), (410, 46112), (440, 42968), (451, 41920), (524, 36080), (655, 28864), (656, 28820), (704, 26855), (820, 23056), (880, 21484), (902, 20960), (1048, 18040), (1310, 14432), (1312, 14410), (1441, 13120), (1640, 11528), (1760, 10742), (1804, 10480), (2096, 9020), (2255, 8384), (2620, 7216), (2624, 7205), (2882, 6560), (3280, 5764), (3520, 5371), (3608, 5240), (4192, 4510)]