20613720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{283}}^1\times {\mathrm{607}}^1$

素因数の和:904

約数の個数: 64

約数和(自身を含む): 62161920

約数和(自身を除く): 41548200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 283, 566, 607, 849, 1132, 1214, 1415, 1698, 1821, 2264, 2428, 2830, 3035, 3396, 3642, 4245, 4856, 5660, 6070, 6792, 7284, 8490, 9105, 11320, 12140, 14568, 16980, 18210, 24280, 33960, 36420, 72840, 171781, 343562, 515343, 687124, 858905, 1030686, 1374248, 1717810, 2061372, 2576715, 3435620, 4122744, 5153430, 6871240, 10306860, 20613720]

約数ペア:

[(1, 20613720), (2, 10306860), (3, 6871240), (4, 5153430), (5, 4122744), (6, 3435620), (8, 2576715), (10, 2061372), (12, 1717810), (15, 1374248), (20, 1030686), (24, 858905), (30, 687124), (40, 515343), (60, 343562), (120, 171781), (283, 72840), (566, 36420), (607, 33960), (849, 24280), (1132, 18210), (1214, 16980), (1415, 14568), (1698, 12140), (1821, 11320), (2264, 9105), (2428, 8490), (2830, 7284), (3035, 6792), (3396, 6070), (3642, 5660), (4245, 4856)]