21557976

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2264

約数の個数: 64

約数和(自身を含む): 60410880

約数和(自身を除く): 38852904

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 22, 24, 33, 37, 44, 66, 74, 88, 111, 132, 148, 222, 264, 296, 407, 444, 814, 888, 1221, 1628, 2207, 2442, 3256, 4414, 4884, 6621, 8828, 9768, 13242, 17656, 24277, 26484, 48554, 52968, 72831, 81659, 97108, 145662, 163318, 194216, 244977, 291324, 326636, 489954, 582648, 653272, 898249, 979908, 1796498, 1959816, 2694747, 3592996, 5389494, 7185992, 10778988, 21557976]

約数ペア:

[(1, 21557976), (2, 10778988), (3, 7185992), (4, 5389494), (6, 3592996), (8, 2694747), (11, 1959816), (12, 1796498), (22, 979908), (24, 898249), (33, 653272), (37, 582648), (44, 489954), (66, 326636), (74, 291324), (88, 244977), (111, 194216), (132, 163318), (148, 145662), (222, 97108), (264, 81659), (296, 72831), (407, 52968), (444, 48554), (814, 26484), (888, 24277), (1221, 17656), (1628, 13242), (2207, 9768), (2442, 8828), (3256, 6621), (4414, 4884)]