90320980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{145679}}^1$

素因数の和:145719

約数の個数: 24

約数和(自身を含む): 195793920

約数和(自身を除く): 105472940

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 145679, 291358, 582716, 728395, 1456790, 2913580, 4516049, 9032098, 18064196, 22580245, 45160490, 90320980]

約数ペア:

[(1, 90320980), (2, 45160490), (4, 22580245), (5, 18064196), (10, 9032098), (20, 4516049), (31, 2913580), (62, 1456790), (124, 728395), (155, 582716), (310, 291358), (620, 145679)]