21288840

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{4327}}^1$

素因数の和:4382

約数の個数: 64

約数和(自身を含む): 65439360

約数和(自身を除く): 44150520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 41, 60, 82, 120, 123, 164, 205, 246, 328, 410, 492, 615, 820, 984, 1230, 1640, 2460, 4327, 4920, 8654, 12981, 17308, 21635, 25962, 34616, 43270, 51924, 64905, 86540, 103848, 129810, 173080, 177407, 259620, 354814, 519240, 532221, 709628, 887035, 1064442, 1419256, 1774070, 2128884, 2661105, 3548140, 4257768, 5322210, 7096280, 10644420, 21288840]

約数ペア:

[(1, 21288840), (2, 10644420), (3, 7096280), (4, 5322210), (5, 4257768), (6, 3548140), (8, 2661105), (10, 2128884), (12, 1774070), (15, 1419256), (20, 1064442), (24, 887035), (30, 709628), (40, 532221), (41, 519240), (60, 354814), (82, 259620), (120, 177407), (123, 173080), (164, 129810), (205, 103848), (246, 86540), (328, 64905), (410, 51924), (492, 43270), (615, 34616), (820, 25962), (984, 21635), (1230, 17308), (1640, 12981), (2460, 8654), (4327, 4920)]