18861993

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:174

約数の個数: 48

約数和(自身を含む): 30640896

約数和(自身を除く): 11778903

約数列:

[1, 3, 9, 17, 43, 47, 51, 61, 129, 141, 153, 183, 387, 423, 549, 731, 799, 1037, 2021, 2193, 2397, 2623, 2867, 3111, 6063, 6579, 7191, 7869, 8601, 9333, 18189, 23607, 25803, 34357, 44591, 48739, 103071, 123281, 133773, 146217, 309213, 369843, 401319, 438651, 1109529, 2095777, 6287331, 18861993]

約数ペア:

[(1, 18861993), (3, 6287331), (9, 2095777), (17, 1109529), (43, 438651), (47, 401319), (51, 369843), (61, 309213), (129, 146217), (141, 133773), (153, 123281), (183, 103071), (387, 48739), (423, 44591), (549, 34357), (731, 25803), (799, 23607), (1037, 18189), (2021, 9333), (2193, 8601), (2397, 7869), (2623, 7191), (2867, 6579), (3111, 6063)]