81257631

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 137396448

約数和(自身を除く): 56138817

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 101, 147, 273, 303, 421, 637, 707, 1263, 1313, 1911, 2121, 2947, 3939, 4949, 5473, 8841, 9191, 14847, 16419, 20629, 27573, 38311, 42521, 61887, 64337, 114933, 127563, 193011, 268177, 297647, 552773, 804531, 892941, 1658319, 2083529, 3869411, 6250587, 11608233, 27085877, 81257631]

約数ペア:

[(1, 81257631), (3, 27085877), (7, 11608233), (13, 6250587), (21, 3869411), (39, 2083529), (49, 1658319), (91, 892941), (101, 804531), (147, 552773), (273, 297647), (303, 268177), (421, 193011), (637, 127563), (707, 114933), (1263, 64337), (1313, 61887), (1911, 42521), (2121, 38311), (2947, 27573), (3939, 20629), (4949, 16419), (5473, 14847), (8841, 9191)]