81718665

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 158146560

約数和(自身を除く): 76427895

約数列:

[1, 3, 5, 7, 15, 21, 29, 35, 47, 87, 105, 141, 145, 203, 235, 329, 435, 571, 609, 705, 987, 1015, 1363, 1645, 1713, 2855, 3045, 3997, 4089, 4935, 6815, 8565, 9541, 11991, 16559, 19985, 20445, 26837, 28623, 47705, 49677, 59955, 80511, 82795, 115913, 134185, 143115, 187859, 248385, 347739, 402555, 563577, 579565, 778273, 939295, 1738695, 2334819, 2817885, 3891365, 5447911, 11674095, 16343733, 27239555, 81718665]

約数ペア:

[(1, 81718665), (3, 27239555), (5, 16343733), (7, 11674095), (15, 5447911), (21, 3891365), (29, 2817885), (35, 2334819), (47, 1738695), (87, 939295), (105, 778273), (141, 579565), (145, 563577), (203, 402555), (235, 347739), (329, 248385), (435, 187859), (571, 143115), (609, 134185), (705, 115913), (987, 82795), (1015, 80511), (1363, 59955), (1645, 49677), (1713, 47705), (2855, 28623), (3045, 26837), (3997, 20445), (4089, 19985), (4935, 16559), (6815, 11991), (8565, 9541)]