90709780

素因数分解:

$2^2\times 5^1\times 7^4\times {\mathrm{1889}}^1$

素因数の和:1926

約数の個数: 60

約数和(自身を含む): 222343380

約数和(自身を除く): 131633600

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 1889, 2401, 3430, 3778, 4802, 6860, 7556, 9445, 9604, 12005, 13223, 18890, 24010, 26446, 37780, 48020, 52892, 66115, 92561, 132230, 185122, 264460, 370244, 462805, 647927, 925610, 1295854, 1851220, 2591708, 3239635, 4535489, 6479270, 9070978, 12958540, 18141956, 22677445, 45354890, 90709780]

約数ペア:

[(1, 90709780), (2, 45354890), (4, 22677445), (5, 18141956), (7, 12958540), (10, 9070978), (14, 6479270), (20, 4535489), (28, 3239635), (35, 2591708), (49, 1851220), (70, 1295854), (98, 925610), (140, 647927), (196, 462805), (245, 370244), (343, 264460), (490, 185122), (686, 132230), (980, 92561), (1372, 66115), (1715, 52892), (1889, 48020), (2401, 37780), (3430, 26446), (3778, 24010), (4802, 18890), (6860, 13223), (7556, 12005), (9445, 9604)]