19791180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2557}}^1$

素因数の和:2615

約数の個数: 72

約数和(自身を含む): 61453392

約数和(自身を除く): 41662212

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2557, 2580, 3870, 5114, 7671, 7740, 10228, 12785, 15342, 23013, 25570, 30684, 38355, 46026, 51140, 76710, 92052, 109951, 115065, 153420, 219902, 230130, 329853, 439804, 460260, 549755, 659706, 989559, 1099510, 1319412, 1649265, 1979118, 2199020, 3298530, 3958236, 4947795, 6597060, 9895590, 19791180]

約数ペア:

[(1, 19791180), (2, 9895590), (3, 6597060), (4, 4947795), (5, 3958236), (6, 3298530), (9, 2199020), (10, 1979118), (12, 1649265), (15, 1319412), (18, 1099510), (20, 989559), (30, 659706), (36, 549755), (43, 460260), (45, 439804), (60, 329853), (86, 230130), (90, 219902), (129, 153420), (172, 115065), (180, 109951), (215, 92052), (258, 76710), (387, 51140), (430, 46026), (516, 38355), (645, 30684), (774, 25570), (860, 23013), (1290, 15342), (1548, 12785), (1935, 10228), (2557, 7740), (2580, 7671), (3870, 5114)]