61131455

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{137}}^1$

素因数の和:240

約数の個数: 64

約数和(自身を含む): 98565120

約数和(自身を除く): 37433665

約数列:

[1, 5, 7, 11, 19, 35, 55, 61, 77, 95, 133, 137, 209, 305, 385, 427, 665, 671, 685, 959, 1045, 1159, 1463, 1507, 2135, 2603, 3355, 4697, 4795, 5795, 7315, 7535, 8113, 8357, 10549, 12749, 13015, 18221, 23485, 28633, 40565, 41785, 52745, 58499, 63745, 89243, 91105, 91927, 143165, 158783, 200431, 292495, 446215, 459635, 643489, 793915, 1002155, 1111481, 1746613, 3217445, 5557405, 8733065, 12226291, 61131455]

約数ペア:

[(1, 61131455), (5, 12226291), (7, 8733065), (11, 5557405), (19, 3217445), (35, 1746613), (55, 1111481), (61, 1002155), (77, 793915), (95, 643489), (133, 459635), (137, 446215), (209, 292495), (305, 200431), (385, 158783), (427, 143165), (665, 91927), (671, 91105), (685, 89243), (959, 63745), (1045, 58499), (1159, 52745), (1463, 41785), (1507, 40565), (2135, 28633), (2603, 23485), (3355, 18221), (4697, 13015), (4795, 12749), (5795, 10549), (7315, 8357), (7535, 8113)]