20541720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2411}}^1$

素因数の和:2496

約数の個数: 64

約数和(自身を含む): 62519040

約数和(自身を除く): 41977320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2411, 2840, 4260, 4822, 7233, 8520, 9644, 12055, 14466, 19288, 24110, 28932, 36165, 48220, 57864, 72330, 96440, 144660, 171181, 289320, 342362, 513543, 684724, 855905, 1027086, 1369448, 1711810, 2054172, 2567715, 3423620, 4108344, 5135430, 6847240, 10270860, 20541720]

約数ペア:

[(1, 20541720), (2, 10270860), (3, 6847240), (4, 5135430), (5, 4108344), (6, 3423620), (8, 2567715), (10, 2054172), (12, 1711810), (15, 1369448), (20, 1027086), (24, 855905), (30, 684724), (40, 513543), (60, 342362), (71, 289320), (120, 171181), (142, 144660), (213, 96440), (284, 72330), (355, 57864), (426, 48220), (568, 36165), (710, 28932), (852, 24110), (1065, 19288), (1420, 14466), (1704, 12055), (2130, 9644), (2411, 8520), (2840, 7233), (4260, 4822)]