9978440

素因数分解:

$2^3\times 5^1\times {\mathrm{313}}^1\times {\mathrm{797}}^1$

素因数の和:1121

約数の個数: 32

約数和(自身を含む): 22551480

約数和(自身を除く): 12573040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 313, 626, 797, 1252, 1565, 1594, 2504, 3130, 3188, 3985, 6260, 6376, 7970, 12520, 15940, 31880, 249461, 498922, 997844, 1247305, 1995688, 2494610, 4989220, 9978440]

約数ペア:

[(1, 9978440), (2, 4989220), (4, 2494610), (5, 1995688), (8, 1247305), (10, 997844), (20, 498922), (40, 249461), (313, 31880), (626, 15940), (797, 12520), (1252, 7970), (1565, 6376), (1594, 6260), (2504, 3985), (3130, 3188)]