20197432120

素因数分解:

$2^3\times 5^1\times {\mathrm{2143}}^1\times {\mathrm{235621}}^1$

素因数の和:237775

約数の個数: 32

約数和(自身を含む): 45465621120

約数和(自身を除く): 25268189000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 2143, 4286, 8572, 10715, 17144, 21430, 42860, 85720, 235621, 471242, 942484, 1178105, 1884968, 2356210, 4712420, 9424840, 504935803, 1009871606, 2019743212, 2524679015, 4039486424, 5049358030, 10098716060, 20197432120]

約数ペア:

[(1, 20197432120), (2, 10098716060), (4, 5049358030), (5, 4039486424), (8, 2524679015), (10, 2019743212), (20, 1009871606), (40, 504935803), (2143, 9424840), (4286, 4712420), (8572, 2356210), (10715, 1884968), (17144, 1178105), (21430, 942484), (42860, 471242), (85720, 235621)]