18966639968

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{157}}^1\times {\mathrm{13063}}^1$

素因数の和:13264

約数の個数: 72

約数和(自身を含む): 39921990192

約数和(自身を除く): 20955350224

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 157, 272, 289, 314, 544, 578, 628, 1156, 1256, 2312, 2512, 2669, 4624, 5024, 5338, 9248, 10676, 13063, 21352, 26126, 42704, 45373, 52252, 85408, 90746, 104504, 181492, 209008, 222071, 362984, 418016, 444142, 725968, 888284, 1451936, 1776568, 2050891, 3553136, 3775207, 4101782, 7106272, 7550414, 8203564, 15100828, 16407128, 30201656, 32814256, 34865147, 60403312, 65628512, 69730294, 120806624, 139460588, 278921176, 557842352, 592707499, 1115684704, 1185414998, 2370829996, 4741659992, 9483319984, 18966639968]

約数ペア:

[(1, 18966639968), (2, 9483319984), (4, 4741659992), (8, 2370829996), (16, 1185414998), (17, 1115684704), (32, 592707499), (34, 557842352), (68, 278921176), (136, 139460588), (157, 120806624), (272, 69730294), (289, 65628512), (314, 60403312), (544, 34865147), (578, 32814256), (628, 30201656), (1156, 16407128), (1256, 15100828), (2312, 8203564), (2512, 7550414), (2669, 7106272), (4624, 4101782), (5024, 3775207), (5338, 3553136), (9248, 2050891), (10676, 1776568), (13063, 1451936), (21352, 888284), (26126, 725968), (42704, 444142), (45373, 418016), (52252, 362984), (85408, 222071), (90746, 209008), (104504, 181492)]