18457140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23663}}^1$

素因数の和:23688

約数の個数: 48

約数和(自身を含む): 55657728

約数和(自身を除く): 37200588

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 23663, 47326, 70989, 94652, 118315, 141978, 236630, 283956, 307619, 354945, 473260, 615238, 709890, 922857, 1230476, 1419780, 1538095, 1845714, 3076190, 3691428, 4614285, 6152380, 9228570, 18457140]

約数ペア:

[(1, 18457140), (2, 9228570), (3, 6152380), (4, 4614285), (5, 3691428), (6, 3076190), (10, 1845714), (12, 1538095), (13, 1419780), (15, 1230476), (20, 922857), (26, 709890), (30, 615238), (39, 473260), (52, 354945), (60, 307619), (65, 283956), (78, 236630), (130, 141978), (156, 118315), (195, 94652), (260, 70989), (390, 47326), (780, 23663)]