20261620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{2591}}^1$

素因数の和:2640

約数の個数: 48

約数和(自身を含む): 47029248

約数和(自身を除く): 26767628

約数列:

[1, 2, 4, 5, 10, 17, 20, 23, 34, 46, 68, 85, 92, 115, 170, 230, 340, 391, 460, 782, 1564, 1955, 2591, 3910, 5182, 7820, 10364, 12955, 25910, 44047, 51820, 59593, 88094, 119186, 176188, 220235, 238372, 297965, 440470, 595930, 880940, 1013081, 1191860, 2026162, 4052324, 5065405, 10130810, 20261620]

約数ペア:

[(1, 20261620), (2, 10130810), (4, 5065405), (5, 4052324), (10, 2026162), (17, 1191860), (20, 1013081), (23, 880940), (34, 595930), (46, 440470), (68, 297965), (85, 238372), (92, 220235), (115, 176188), (170, 119186), (230, 88094), (340, 59593), (391, 51820), (460, 44047), (782, 25910), (1564, 12955), (1955, 10364), (2591, 7820), (3910, 5182)]