194890120

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{79873}}^1$

素因数の和:79945

約数の個数: 32

約数和(自身を含む): 445696920

約数和(自身を除く): 250806800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 79873, 159746, 319492, 399365, 638984, 798730, 1597460, 3194920, 4872253, 9744506, 19489012, 24361265, 38978024, 48722530, 97445060, 194890120]

約数ペア:

[(1, 194890120), (2, 97445060), (4, 48722530), (5, 38978024), (8, 24361265), (10, 19489012), (20, 9744506), (40, 4872253), (61, 3194920), (122, 1597460), (244, 798730), (305, 638984), (488, 399365), (610, 319492), (1220, 159746), (2440, 79873)]