31694780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{877}}^1$

素因数の和:1038

約数の個数: 48

約数和(自身を含む): 72276960

約数和(自身を除く): 40582180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 556, 695, 877, 1390, 1754, 1807, 2780, 3508, 3614, 4385, 7228, 8770, 9035, 11401, 17540, 18070, 22802, 36140, 45604, 57005, 114010, 121903, 228020, 243806, 487612, 609515, 1219030, 1584739, 2438060, 3169478, 6338956, 7923695, 15847390, 31694780]

約数ペア:

[(1, 31694780), (2, 15847390), (4, 7923695), (5, 6338956), (10, 3169478), (13, 2438060), (20, 1584739), (26, 1219030), (52, 609515), (65, 487612), (130, 243806), (139, 228020), (260, 121903), (278, 114010), (556, 57005), (695, 45604), (877, 36140), (1390, 22802), (1754, 18070), (1807, 17540), (2780, 11401), (3508, 9035), (3614, 8770), (4385, 7228)]