81331440

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3109}}^1$

素因数の和:3234

約数の個数: 80

約数和(自身を含む): 254522400

約数和(自身を除く): 173190960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 109, 120, 218, 240, 327, 436, 545, 654, 872, 1090, 1308, 1635, 1744, 2180, 2616, 3109, 3270, 4360, 5232, 6218, 6540, 8720, 9327, 12436, 13080, 15545, 18654, 24872, 26160, 31090, 37308, 46635, 49744, 62180, 74616, 93270, 124360, 149232, 186540, 248720, 338881, 373080, 677762, 746160, 1016643, 1355524, 1694405, 2033286, 2711048, 3388810, 4066572, 5083215, 5422096, 6777620, 8133144, 10166430, 13555240, 16266288, 20332860, 27110480, 40665720, 81331440]

約数ペア:

[(1, 81331440), (2, 40665720), (3, 27110480), (4, 20332860), (5, 16266288), (6, 13555240), (8, 10166430), (10, 8133144), (12, 6777620), (15, 5422096), (16, 5083215), (20, 4066572), (24, 3388810), (30, 2711048), (40, 2033286), (48, 1694405), (60, 1355524), (80, 1016643), (109, 746160), (120, 677762), (218, 373080), (240, 338881), (327, 248720), (436, 186540), (545, 149232), (654, 124360), (872, 93270), (1090, 74616), (1308, 62180), (1635, 49744), (1744, 46635), (2180, 37308), (2616, 31090), (3109, 26160), (3270, 24872), (4360, 18654), (5232, 15545), (6218, 13080), (6540, 12436), (8720, 9327)]