21244220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{62483}}^1$

素因数の和:62509

約数の個数: 24

約数和(自身を含む): 47237904

約数和(自身を除く): 25993684

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 340, 62483, 124966, 249932, 312415, 624830, 1062211, 1249660, 2124422, 4248844, 5311055, 10622110, 21244220]

約数ペア:

[(1, 21244220), (2, 10622110), (4, 5311055), (5, 4248844), (10, 2124422), (17, 1249660), (20, 1062211), (34, 624830), (68, 312415), (85, 249932), (170, 124966), (340, 62483)]