81780064

素因数分解:

$2^5\times {\mathrm{17}}^2\times {\mathrm{37}}^1\times {\mathrm{239}}^1$

素因数の和:320

約数の個数: 72

約数和(自身を含む): 176389920

約数和(自身を除く): 94609856

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 37, 68, 74, 136, 148, 239, 272, 289, 296, 478, 544, 578, 592, 629, 956, 1156, 1184, 1258, 1912, 2312, 2516, 3824, 4063, 4624, 5032, 7648, 8126, 8843, 9248, 10064, 10693, 16252, 17686, 20128, 21386, 32504, 35372, 42772, 65008, 69071, 70744, 85544, 130016, 138142, 141488, 150331, 171088, 276284, 282976, 300662, 342176, 552568, 601324, 1105136, 1202648, 2210272, 2405296, 2555627, 4810592, 5111254, 10222508, 20445016, 40890032, 81780064]

約数ペア:

[(1, 81780064), (2, 40890032), (4, 20445016), (8, 10222508), (16, 5111254), (17, 4810592), (32, 2555627), (34, 2405296), (37, 2210272), (68, 1202648), (74, 1105136), (136, 601324), (148, 552568), (239, 342176), (272, 300662), (289, 282976), (296, 276284), (478, 171088), (544, 150331), (578, 141488), (592, 138142), (629, 130016), (956, 85544), (1156, 70744), (1184, 69071), (1258, 65008), (1912, 42772), (2312, 35372), (2516, 32504), (3824, 21386), (4063, 20128), (4624, 17686), (5032, 16252), (7648, 10693), (8126, 10064), (8843, 9248)]