12961000

素因数分解:

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

素因数の和:1031

約数の個数: 64

約数和(自身を含む): 32694480

約数和(自身を除く): 19733480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 125, 130, 200, 250, 260, 325, 500, 520, 650, 997, 1000, 1300, 1625, 1994, 2600, 3250, 3988, 4985, 6500, 7976, 9970, 12961, 13000, 19940, 24925, 25922, 39880, 49850, 51844, 64805, 99700, 103688, 124625, 129610, 199400, 249250, 259220, 324025, 498500, 518440, 648050, 997000, 1296100, 1620125, 2592200, 3240250, 6480500, 12961000]

約数ペア:

[(1, 12961000), (2, 6480500), (4, 3240250), (5, 2592200), (8, 1620125), (10, 1296100), (13, 997000), (20, 648050), (25, 518440), (26, 498500), (40, 324025), (50, 259220), (52, 249250), (65, 199400), (100, 129610), (104, 124625), (125, 103688), (130, 99700), (200, 64805), (250, 51844), (260, 49850), (325, 39880), (500, 25922), (520, 24925), (650, 19940), (997, 13000), (1000, 12961), (1300, 9970), (1625, 7976), (1994, 6500), (2600, 4985), (3250, 3988)]