251488640

素因数分解:

$2^7\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{181}}^1$

素因数の和:380

約数の個数: 128

約数和(自身を含む): 654937920

約数和(自身を除く): 403449280

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 128, 130, 160, 167, 181, 208, 260, 320, 334, 362, 416, 520, 640, 668, 724, 832, 835, 905, 1040, 1336, 1448, 1664, 1670, 1810, 2080, 2171, 2353, 2672, 2896, 3340, 3620, 4160, 4342, 4706, 5344, 5792, 6680, 7240, 8320, 8684, 9412, 10688, 10855, 11584, 11765, 13360, 14480, 17368, 18824, 21376, 21710, 23168, 23530, 26720, 28960, 30227, 34736, 37648, 43420, 47060, 53440, 57920, 60454, 69472, 75296, 86840, 94120, 106880, 115840, 120908, 138944, 150592, 151135, 173680, 188240, 241816, 277888, 301184, 302270, 347360, 376480, 392951, 483632, 604540, 694720, 752960, 785902, 967264, 1209080, 1389440, 1505920, 1571804, 1934528, 1964755, 2418160, 3143608, 3869056, 3929510, 4836320, 6287216, 7859020, 9672640, 12574432, 15718040, 19345280, 25148864, 31436080, 50297728, 62872160, 125744320, 251488640]

約数ペア:

[(1, 251488640), (2, 125744320), (4, 62872160), (5, 50297728), (8, 31436080), (10, 25148864), (13, 19345280), (16, 15718040), (20, 12574432), (26, 9672640), (32, 7859020), (40, 6287216), (52, 4836320), (64, 3929510), (65, 3869056), (80, 3143608), (104, 2418160), (128, 1964755), (130, 1934528), (160, 1571804), (167, 1505920), (181, 1389440), (208, 1209080), (260, 967264), (320, 785902), (334, 752960), (362, 694720), (416, 604540), (520, 483632), (640, 392951), (668, 376480), (724, 347360), (832, 302270), (835, 301184), (905, 277888), (1040, 241816), (1336, 188240), (1448, 173680), (1664, 151135), (1670, 150592), (1810, 138944), (2080, 120908), (2171, 115840), (2353, 106880), (2672, 94120), (2896, 86840), (3340, 75296), (3620, 69472), (4160, 60454), (4342, 57920), (4706, 53440), (5344, 47060), (5792, 43420), (6680, 37648), (7240, 34736), (8320, 30227), (8684, 28960), (9412, 26720), (10688, 23530), (10855, 23168), (11584, 21710), (11765, 21376), (13360, 18824), (14480, 17368)]