81166120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{1277}}^1$

素因数の和:1522

約数の個数: 64

約数和(自身を含む): 209796480

約数和(自身を除く): 128630360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 227, 280, 454, 908, 1135, 1277, 1589, 1816, 2270, 2554, 3178, 4540, 5108, 6356, 6385, 7945, 8939, 9080, 10216, 12712, 12770, 15890, 17878, 25540, 31780, 35756, 44695, 51080, 63560, 71512, 89390, 178780, 289879, 357560, 579758, 1159516, 1449395, 2029153, 2319032, 2898790, 4058306, 5797580, 8116612, 10145765, 11595160, 16233224, 20291530, 40583060, 81166120]

約数ペア:

[(1, 81166120), (2, 40583060), (4, 20291530), (5, 16233224), (7, 11595160), (8, 10145765), (10, 8116612), (14, 5797580), (20, 4058306), (28, 2898790), (35, 2319032), (40, 2029153), (56, 1449395), (70, 1159516), (140, 579758), (227, 357560), (280, 289879), (454, 178780), (908, 89390), (1135, 71512), (1277, 63560), (1589, 51080), (1816, 44695), (2270, 35756), (2554, 31780), (3178, 25540), (4540, 17878), (5108, 15890), (6356, 12770), (6385, 12712), (7945, 10216), (8939, 9080)]