6480500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{997}}^1$

素因数の和:1029

約数の個数: 48

約数和(自身を含む): 15257424

約数和(自身を除く): 8776924

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 997, 1300, 1625, 1994, 3250, 3988, 4985, 6500, 9970, 12961, 19940, 24925, 25922, 49850, 51844, 64805, 99700, 124625, 129610, 249250, 259220, 324025, 498500, 648050, 1296100, 1620125, 3240250, 6480500]

約数ペア:

[(1, 6480500), (2, 3240250), (4, 1620125), (5, 1296100), (10, 648050), (13, 498500), (20, 324025), (25, 259220), (26, 249250), (50, 129610), (52, 124625), (65, 99700), (100, 64805), (125, 51844), (130, 49850), (250, 25922), (260, 24925), (325, 19940), (500, 12961), (650, 9970), (997, 6500), (1300, 4985), (1625, 3988), (1994, 3250)]