199999620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{439}}^1\times {\mathrm{2531}}^1$

素因数の和:2985

約数の個数: 72

約数和(自身を含む): 608287680

約数和(自身を除く): 408288060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 439, 878, 1317, 1756, 2195, 2531, 2634, 3951, 4390, 5062, 5268, 6585, 7593, 7902, 8780, 10124, 12655, 13170, 15186, 15804, 19755, 22779, 25310, 26340, 30372, 37965, 39510, 45558, 50620, 75930, 79020, 91116, 113895, 151860, 227790, 455580, 1111109, 2222218, 3333327, 4444436, 5555545, 6666654, 9999981, 11111090, 13333308, 16666635, 19999962, 22222180, 33333270, 39999924, 49999905, 66666540, 99999810, 199999620]

約数ペア:

[(1, 199999620), (2, 99999810), (3, 66666540), (4, 49999905), (5, 39999924), (6, 33333270), (9, 22222180), (10, 19999962), (12, 16666635), (15, 13333308), (18, 11111090), (20, 9999981), (30, 6666654), (36, 5555545), (45, 4444436), (60, 3333327), (90, 2222218), (180, 1111109), (439, 455580), (878, 227790), (1317, 151860), (1756, 113895), (2195, 91116), (2531, 79020), (2634, 75930), (3951, 50620), (4390, 45558), (5062, 39510), (5268, 37965), (6585, 30372), (7593, 26340), (7902, 25310), (8780, 22779), (10124, 19755), (12655, 15804), (13170, 15186)]