19977573777

素因数分解:

$3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{241}}^1\times {\mathrm{2239}}^1$

素因数の和:2574

約数の個数: 64

約数和(自身を含む): 32056442880

約数和(自身を除く): 12078869103

約数列:

[1, 3, 7, 21, 41, 43, 123, 129, 241, 287, 301, 723, 861, 903, 1687, 1763, 2239, 5061, 5289, 6717, 9881, 10363, 12341, 15673, 29643, 31089, 37023, 47019, 69167, 72541, 91799, 96277, 207501, 217623, 275397, 288831, 424883, 539599, 642593, 673939, 1274649, 1618797, 1927779, 2021817, 2974181, 3777193, 3947357, 8922543, 11331579, 11842071, 22123559, 23202757, 27631499, 66370677, 69608271, 82894497, 154864913, 162419299, 464594739, 487257897, 951313037, 2853939111, 6659191259, 19977573777]

約数ペア:

[(1, 19977573777), (3, 6659191259), (7, 2853939111), (21, 951313037), (41, 487257897), (43, 464594739), (123, 162419299), (129, 154864913), (241, 82894497), (287, 69608271), (301, 66370677), (723, 27631499), (861, 23202757), (903, 22123559), (1687, 11842071), (1763, 11331579), (2239, 8922543), (5061, 3947357), (5289, 3777193), (6717, 2974181), (9881, 2021817), (10363, 1927779), (12341, 1618797), (15673, 1274649), (29643, 673939), (31089, 642593), (37023, 539599), (47019, 424883), (69167, 288831), (72541, 275397), (91799, 217623), (96277, 207501)]