81339657

素因数分解:

$3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 131634432

約数和(自身を除く): 50294775

約数列:

[1, 3, 7, 21, 47, 49, 61, 141, 147, 183, 193, 329, 427, 579, 987, 1281, 1351, 2303, 2867, 2989, 4053, 6909, 8601, 8967, 9071, 9457, 11773, 20069, 27213, 28371, 35319, 60207, 63497, 82411, 140483, 190491, 247233, 421449, 444479, 553331, 576877, 1333437, 1659993, 1730631, 3873317, 11619951, 27113219, 81339657]

約数ペア:

[(1, 81339657), (3, 27113219), (7, 11619951), (21, 3873317), (47, 1730631), (49, 1659993), (61, 1333437), (141, 576877), (147, 553331), (183, 444479), (193, 421449), (329, 247233), (427, 190491), (579, 140483), (987, 82411), (1281, 63497), (1351, 60207), (2303, 35319), (2867, 28371), (2989, 27213), (4053, 20069), (6909, 11773), (8601, 9457), (8967, 9071)]