25222940

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 54848640

約数和(自身を除く): 29625700

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 139, 172, 211, 215, 278, 422, 430, 556, 695, 844, 860, 1055, 1390, 2110, 2780, 4220, 5977, 9073, 11954, 18146, 23908, 29329, 29885, 36292, 45365, 58658, 59770, 90730, 117316, 119540, 146645, 181460, 293290, 586580, 1261147, 2522294, 5044588, 6305735, 12611470, 25222940]

約数ペア:

[(1, 25222940), (2, 12611470), (4, 6305735), (5, 5044588), (10, 2522294), (20, 1261147), (43, 586580), (86, 293290), (139, 181460), (172, 146645), (211, 119540), (215, 117316), (278, 90730), (422, 59770), (430, 58658), (556, 45365), (695, 36292), (844, 29885), (860, 29329), (1055, 23908), (1390, 18146), (2110, 11954), (2780, 9073), (4220, 5977)]