81819400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31469}}^1$

素因数の和:31498

約数の個数: 48

約数和(自身を含む): 204869700

約数和(自身を除く): 123050300

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 31469, 62938, 125876, 157345, 251752, 314690, 409097, 629380, 786725, 818194, 1258760, 1573450, 1636388, 2045485, 3146900, 3272776, 4090970, 6293800, 8181940, 10227425, 16363880, 20454850, 40909700, 81819400]

約数ペア:

[(1, 81819400), (2, 40909700), (4, 20454850), (5, 16363880), (8, 10227425), (10, 8181940), (13, 6293800), (20, 4090970), (25, 3272776), (26, 3146900), (40, 2045485), (50, 1636388), (52, 1573450), (65, 1258760), (100, 818194), (104, 786725), (130, 629380), (200, 409097), (260, 314690), (325, 251752), (520, 157345), (650, 125876), (1300, 62938), (2600, 31469)]