81027440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{4583}}^1$

素因数の和:4626

約数の個数: 80

約数和(自身を含む): 214861248

約数和(自身を除く): 133833808

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 34, 40, 52, 65, 68, 80, 85, 104, 130, 136, 170, 208, 221, 260, 272, 340, 442, 520, 680, 884, 1040, 1105, 1360, 1768, 2210, 3536, 4420, 4583, 8840, 9166, 17680, 18332, 22915, 36664, 45830, 59579, 73328, 77911, 91660, 119158, 155822, 183320, 238316, 297895, 311644, 366640, 389555, 476632, 595790, 623288, 779110, 953264, 1012843, 1191580, 1246576, 1558220, 2025686, 2383160, 3116440, 4051372, 4766320, 5064215, 6232880, 8102744, 10128430, 16205488, 20256860, 40513720, 81027440]

約数ペア:

[(1, 81027440), (2, 40513720), (4, 20256860), (5, 16205488), (8, 10128430), (10, 8102744), (13, 6232880), (16, 5064215), (17, 4766320), (20, 4051372), (26, 3116440), (34, 2383160), (40, 2025686), (52, 1558220), (65, 1246576), (68, 1191580), (80, 1012843), (85, 953264), (104, 779110), (130, 623288), (136, 595790), (170, 476632), (208, 389555), (221, 366640), (260, 311644), (272, 297895), (340, 238316), (442, 183320), (520, 155822), (680, 119158), (884, 91660), (1040, 77911), (1105, 73328), (1360, 59579), (1768, 45830), (2210, 36664), (3536, 22915), (4420, 18332), (4583, 17680), (8840, 9166)]