189901980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{9679}}^1$

素因数の和:9803

約数の個数: 72

約数和(自身を含む): 581380800

約数和(自身を除く): 391478820

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 109, 180, 218, 327, 436, 545, 654, 981, 1090, 1308, 1635, 1962, 2180, 3270, 3924, 4905, 6540, 9679, 9810, 19358, 19620, 29037, 38716, 48395, 58074, 87111, 96790, 116148, 145185, 174222, 193580, 290370, 348444, 435555, 580740, 871110, 1055011, 1742220, 2110022, 3165033, 4220044, 5275055, 6330066, 9495099, 10550110, 12660132, 15825165, 18990198, 21100220, 31650330, 37980396, 47475495, 63300660, 94950990, 189901980]

約数ペア:

[(1, 189901980), (2, 94950990), (3, 63300660), (4, 47475495), (5, 37980396), (6, 31650330), (9, 21100220), (10, 18990198), (12, 15825165), (15, 12660132), (18, 10550110), (20, 9495099), (30, 6330066), (36, 5275055), (45, 4220044), (60, 3165033), (90, 2110022), (109, 1742220), (180, 1055011), (218, 871110), (327, 580740), (436, 435555), (545, 348444), (654, 290370), (981, 193580), (1090, 174222), (1308, 145185), (1635, 116148), (1962, 96790), (2180, 87111), (3270, 58074), (3924, 48395), (4905, 38716), (6540, 29037), (9679, 19620), (9810, 19358)]