21565260

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5209}}^1$

素因数の和:5247

約数の個数: 72

約数和(自身を含む): 68271840

約数和(自身を除く): 46706580

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5209, 10418, 15627, 20836, 26045, 31254, 46881, 52090, 62508, 78135, 93762, 104180, 119807, 156270, 187524, 234405, 239614, 312540, 359421, 468810, 479228, 599035, 718842, 937620, 1078263, 1198070, 1437684, 1797105, 2156526, 2396140, 3594210, 4313052, 5391315, 7188420, 10782630, 21565260]

約数ペア:

[(1, 21565260), (2, 10782630), (3, 7188420), (4, 5391315), (5, 4313052), (6, 3594210), (9, 2396140), (10, 2156526), (12, 1797105), (15, 1437684), (18, 1198070), (20, 1078263), (23, 937620), (30, 718842), (36, 599035), (45, 479228), (46, 468810), (60, 359421), (69, 312540), (90, 239614), (92, 234405), (115, 187524), (138, 156270), (180, 119807), (207, 104180), (230, 93762), (276, 78135), (345, 62508), (414, 52090), (460, 46881), (690, 31254), (828, 26045), (1035, 20836), (1380, 15627), (2070, 10418), (4140, 5209)]