201547780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205661}}^1$

素因数の和:205684

約数の個数: 36

約数和(自身を含む): 492354828

約数和(自身を除く): 290807048

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205661, 411322, 822644, 1028305, 1439627, 2056610, 2879254, 4113220, 5758508, 7198135, 10077389, 14396270, 20154778, 28792540, 40309556, 50386945, 100773890, 201547780]

約数ペア:

[(1, 201547780), (2, 100773890), (4, 50386945), (5, 40309556), (7, 28792540), (10, 20154778), (14, 14396270), (20, 10077389), (28, 7198135), (35, 5758508), (49, 4113220), (70, 2879254), (98, 2056610), (140, 1439627), (196, 1028305), (245, 822644), (490, 411322), (980, 205661)]