20399100

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{97}}^1\times {\mathrm{701}}^1$

素因数の和:815

約数の個数: 72

約数和(自身を含む): 59714928

約数和(自身を除く): 39315828

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 97, 100, 150, 194, 291, 300, 388, 485, 582, 701, 970, 1164, 1402, 1455, 1940, 2103, 2425, 2804, 2910, 3505, 4206, 4850, 5820, 7010, 7275, 8412, 9700, 10515, 14020, 14550, 17525, 21030, 29100, 35050, 42060, 52575, 67997, 70100, 105150, 135994, 203991, 210300, 271988, 339985, 407982, 679970, 815964, 1019955, 1359940, 1699925, 2039910, 3399850, 4079820, 5099775, 6799700, 10199550, 20399100]

約数ペア:

[(1, 20399100), (2, 10199550), (3, 6799700), (4, 5099775), (5, 4079820), (6, 3399850), (10, 2039910), (12, 1699925), (15, 1359940), (20, 1019955), (25, 815964), (30, 679970), (50, 407982), (60, 339985), (75, 271988), (97, 210300), (100, 203991), (150, 135994), (194, 105150), (291, 70100), (300, 67997), (388, 52575), (485, 42060), (582, 35050), (701, 29100), (970, 21030), (1164, 17525), (1402, 14550), (1455, 14020), (1940, 10515), (2103, 9700), (2425, 8412), (2804, 7275), (2910, 7010), (3505, 5820), (4206, 4850)]