20987790

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{463}}^1\times {\mathrm{1511}}^1$

素因数の和:1984

約数の個数: 32

約数和(自身を含む): 50512896

約数和(自身を除く): 29525106

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 463, 926, 1389, 1511, 2315, 2778, 3022, 4533, 4630, 6945, 7555, 9066, 13890, 15110, 22665, 45330, 699593, 1399186, 2098779, 3497965, 4197558, 6995930, 10493895, 20987790]

約数ペア:

[(1, 20987790), (2, 10493895), (3, 6995930), (5, 4197558), (6, 3497965), (10, 2098779), (15, 1399186), (30, 699593), (463, 45330), (926, 22665), (1389, 15110), (1511, 13890), (2315, 9066), (2778, 7555), (3022, 6945), (4533, 4630)]