20452960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11621}}^1$

素因数の和:11647

約数の個数: 48

約数和(自身を含む): 52717392

約数和(自身を除く): 32264432

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11621, 23242, 46484, 58105, 92968, 116210, 127831, 185936, 232420, 255662, 371872, 464840, 511324, 639155, 929680, 1022648, 1278310, 1859360, 2045296, 2556620, 4090592, 5113240, 10226480, 20452960]

約数ペア:

[(1, 20452960), (2, 10226480), (4, 5113240), (5, 4090592), (8, 2556620), (10, 2045296), (11, 1859360), (16, 1278310), (20, 1022648), (22, 929680), (32, 639155), (40, 511324), (44, 464840), (55, 371872), (80, 255662), (88, 232420), (110, 185936), (160, 127831), (176, 116210), (220, 92968), (352, 58105), (440, 46484), (880, 23242), (1760, 11621)]