61213040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{281}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 80

約数和(自身を含む): 163650240

約数和(自身を除く): 102437200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 281, 389, 560, 562, 778, 1124, 1405, 1556, 1945, 1967, 2248, 2723, 2810, 3112, 3890, 3934, 4496, 5446, 5620, 6224, 7780, 7868, 9835, 10892, 11240, 13615, 15560, 15736, 19670, 21784, 22480, 27230, 31120, 31472, 39340, 43568, 54460, 78680, 108920, 109309, 157360, 217840, 218618, 437236, 546545, 765163, 874472, 1093090, 1530326, 1748944, 2186180, 3060652, 3825815, 4372360, 6121304, 7651630, 8744720, 12242608, 15303260, 30606520, 61213040]

約数ペア:

[(1, 61213040), (2, 30606520), (4, 15303260), (5, 12242608), (7, 8744720), (8, 7651630), (10, 6121304), (14, 4372360), (16, 3825815), (20, 3060652), (28, 2186180), (35, 1748944), (40, 1530326), (56, 1093090), (70, 874472), (80, 765163), (112, 546545), (140, 437236), (280, 218618), (281, 217840), (389, 157360), (560, 109309), (562, 108920), (778, 78680), (1124, 54460), (1405, 43568), (1556, 39340), (1945, 31472), (1967, 31120), (2248, 27230), (2723, 22480), (2810, 21784), (3112, 19670), (3890, 15736), (3934, 15560), (4496, 13615), (5446, 11240), (5620, 10892), (6224, 9835), (7780, 7868)]