31716620

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1\times {\mathrm{613}}^1$

素因数の和:834

約数の個数: 48

約数和(自身を含む): 72206400

約数和(自身を除く): 40489780

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 199, 260, 398, 613, 796, 995, 1226, 1990, 2452, 2587, 3065, 3980, 5174, 6130, 7969, 10348, 12260, 12935, 15938, 25870, 31876, 39845, 51740, 79690, 121987, 159380, 243974, 487948, 609935, 1219870, 1585831, 2439740, 3171662, 6343324, 7929155, 15858310, 31716620]

約数ペア:

[(1, 31716620), (2, 15858310), (4, 7929155), (5, 6343324), (10, 3171662), (13, 2439740), (20, 1585831), (26, 1219870), (52, 609935), (65, 487948), (130, 243974), (199, 159380), (260, 121987), (398, 79690), (613, 51740), (796, 39845), (995, 31876), (1226, 25870), (1990, 15938), (2452, 12935), (2587, 12260), (3065, 10348), (3980, 7969), (5174, 6130)]