18847504

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:168

約数の個数: 80

約数和(自身を含む): 42219520

約数和(自身を除く): 23372016

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 37, 52, 62, 74, 79, 104, 124, 148, 158, 208, 248, 296, 316, 403, 481, 496, 592, 632, 806, 962, 1027, 1147, 1264, 1612, 1924, 2054, 2294, 2449, 2923, 3224, 3848, 4108, 4588, 4898, 5846, 6448, 7696, 8216, 9176, 9796, 11692, 14911, 16432, 18352, 19592, 23384, 29822, 31837, 37999, 39184, 46768, 59644, 63674, 75998, 90613, 119288, 127348, 151996, 181226, 238576, 254696, 303992, 362452, 509392, 607984, 724904, 1177969, 1449808, 2355938, 4711876, 9423752, 18847504]

約数ペア:

[(1, 18847504), (2, 9423752), (4, 4711876), (8, 2355938), (13, 1449808), (16, 1177969), (26, 724904), (31, 607984), (37, 509392), (52, 362452), (62, 303992), (74, 254696), (79, 238576), (104, 181226), (124, 151996), (148, 127348), (158, 119288), (208, 90613), (248, 75998), (296, 63674), (316, 59644), (403, 46768), (481, 39184), (496, 37999), (592, 31837), (632, 29822), (806, 23384), (962, 19592), (1027, 18352), (1147, 16432), (1264, 14911), (1612, 11692), (1924, 9796), (2054, 9176), (2294, 8216), (2449, 7696), (2923, 6448), (3224, 5846), (3848, 4898), (4108, 4588)]