20401830

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{571}}^1$

素因数の和:981

約数の個数: 48

約数和(自身を含む): 53271504

約数和(自身を除く): 32869674

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 397, 571, 794, 1142, 1191, 1713, 1985, 2382, 2855, 3426, 3573, 3970, 5139, 5710, 5955, 7146, 8565, 10278, 11910, 17130, 17865, 25695, 35730, 51390, 226687, 453374, 680061, 1133435, 1360122, 2040183, 2266870, 3400305, 4080366, 6800610, 10200915, 20401830]

約数ペア:

[(1, 20401830), (2, 10200915), (3, 6800610), (5, 4080366), (6, 3400305), (9, 2266870), (10, 2040183), (15, 1360122), (18, 1133435), (30, 680061), (45, 453374), (90, 226687), (397, 51390), (571, 35730), (794, 25695), (1142, 17865), (1191, 17130), (1713, 11910), (1985, 10278), (2382, 8565), (2855, 7146), (3426, 5955), (3573, 5710), (3970, 5139)]