20440576

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1$

素因数の和:151

約数の個数: 80

約数和(自身を含む): 45715824

約数和(自身を除く): 25275248

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 37, 52, 64, 74, 83, 104, 128, 148, 166, 208, 256, 296, 332, 416, 481, 512, 592, 664, 832, 962, 1079, 1184, 1328, 1664, 1924, 2158, 2368, 2656, 3071, 3328, 3848, 4316, 4736, 5312, 6142, 6656, 7696, 8632, 9472, 10624, 12284, 15392, 17264, 18944, 21248, 24568, 30784, 34528, 39923, 42496, 49136, 61568, 69056, 79846, 98272, 123136, 138112, 159692, 196544, 246272, 276224, 319384, 393088, 552448, 638768, 786176, 1277536, 1572352, 2555072, 5110144, 10220288, 20440576]

約数ペア:

[(1, 20440576), (2, 10220288), (4, 5110144), (8, 2555072), (13, 1572352), (16, 1277536), (26, 786176), (32, 638768), (37, 552448), (52, 393088), (64, 319384), (74, 276224), (83, 246272), (104, 196544), (128, 159692), (148, 138112), (166, 123136), (208, 98272), (256, 79846), (296, 69056), (332, 61568), (416, 49136), (481, 42496), (512, 39923), (592, 34528), (664, 30784), (832, 24568), (962, 21248), (1079, 18944), (1184, 17264), (1328, 15392), (1664, 12284), (1924, 10624), (2158, 9472), (2368, 8632), (2656, 7696), (3071, 6656), (3328, 6142), (3848, 5312), (4316, 4736)]