19812290

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{113}}^1\times {\mathrm{197}}^1$

素因数の和:406

約数の個数: 32

約数和(自身を含む): 36566640

約数和(自身を除く): 16754350

約数列:

[1, 2, 5, 10, 89, 113, 178, 197, 226, 394, 445, 565, 890, 985, 1130, 1970, 10057, 17533, 20114, 22261, 35066, 44522, 50285, 87665, 100570, 111305, 175330, 222610, 1981229, 3962458, 9906145, 19812290]

約数ペア:

[(1, 19812290), (2, 9906145), (5, 3962458), (10, 1981229), (89, 222610), (113, 175330), (178, 111305), (197, 100570), (226, 87665), (394, 50285), (445, 44522), (565, 35066), (890, 22261), (985, 20114), (1130, 17533), (1970, 10057)]