19663880

素因数分解:

$2^3\times 5^1\times {\mathrm{593}}^1\times {\mathrm{829}}^1$

素因数の和:1433

約数の個数: 32

約数和(自身を含む): 44371800

約数和(自身を除く): 24707920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 593, 829, 1186, 1658, 2372, 2965, 3316, 4145, 4744, 5930, 6632, 8290, 11860, 16580, 23720, 33160, 491597, 983194, 1966388, 2457985, 3932776, 4915970, 9831940, 19663880]

約数ペア:

[(1, 19663880), (2, 9831940), (4, 4915970), (5, 3932776), (8, 2457985), (10, 1966388), (20, 983194), (40, 491597), (593, 33160), (829, 23720), (1186, 16580), (1658, 11860), (2372, 8290), (2965, 6632), (3316, 5930), (4145, 4744)]