818440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:134

約数の個数: 64

約数和(自身を含む): 2188800

約数和(自身を除く): 1370360

約数列:

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

約数ペア:

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