21091380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{157}}^1\times {\mathrm{2239}}^1$

素因数の和:2408

約数の個数: 48

約数和(自身を含む): 59458560

約数和(自身を除く): 38367180

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 157, 314, 471, 628, 785, 942, 1570, 1884, 2239, 2355, 3140, 4478, 4710, 6717, 8956, 9420, 11195, 13434, 22390, 26868, 33585, 44780, 67170, 134340, 351523, 703046, 1054569, 1406092, 1757615, 2109138, 3515230, 4218276, 5272845, 7030460, 10545690, 21091380]

約数ペア:

[(1, 21091380), (2, 10545690), (3, 7030460), (4, 5272845), (5, 4218276), (6, 3515230), (10, 2109138), (12, 1757615), (15, 1406092), (20, 1054569), (30, 703046), (60, 351523), (157, 134340), (314, 67170), (471, 44780), (628, 33585), (785, 26868), (942, 22390), (1570, 13434), (1884, 11195), (2239, 9420), (2355, 8956), (3140, 6717), (4478, 4710)]