1636880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:136

約数の個数: 80

約数和(自身を含む): 4523520

約数和(自身を除く): 2886640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 37, 40, 56, 70, 74, 79, 80, 112, 140, 148, 158, 185, 259, 280, 296, 316, 370, 395, 518, 553, 560, 592, 632, 740, 790, 1036, 1106, 1264, 1295, 1480, 1580, 2072, 2212, 2590, 2765, 2923, 2960, 3160, 4144, 4424, 5180, 5530, 5846, 6320, 8848, 10360, 11060, 11692, 14615, 20461, 20720, 22120, 23384, 29230, 40922, 44240, 46768, 58460, 81844, 102305, 116920, 163688, 204610, 233840, 327376, 409220, 818440, 1636880]

約数ペア:

[(1, 1636880), (2, 818440), (4, 409220), (5, 327376), (7, 233840), (8, 204610), (10, 163688), (14, 116920), (16, 102305), (20, 81844), (28, 58460), (35, 46768), (37, 44240), (40, 40922), (56, 29230), (70, 23384), (74, 22120), (79, 20720), (80, 20461), (112, 14615), (140, 11692), (148, 11060), (158, 10360), (185, 8848), (259, 6320), (280, 5846), (296, 5530), (316, 5180), (370, 4424), (395, 4144), (518, 3160), (553, 2960), (560, 2923), (592, 2765), (632, 2590), (740, 2212), (790, 2072), (1036, 1580), (1106, 1480), (1264, 1295)]