81483920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{227}}^1\times {\mathrm{641}}^1$

素因数の和:888

約数の個数: 80

約数和(自身を含む): 217807488

約数和(自身を除く): 136323568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 227, 280, 454, 560, 641, 908, 1135, 1282, 1589, 1816, 2270, 2564, 3178, 3205, 3632, 4487, 4540, 5128, 6356, 6410, 7945, 8974, 9080, 10256, 12712, 12820, 15890, 17948, 18160, 22435, 25424, 25640, 31780, 35896, 44870, 51280, 63560, 71792, 89740, 127120, 145507, 179480, 291014, 358960, 582028, 727535, 1018549, 1164056, 1455070, 2037098, 2328112, 2910140, 4074196, 5092745, 5820280, 8148392, 10185490, 11640560, 16296784, 20370980, 40741960, 81483920]

約数ペア:

[(1, 81483920), (2, 40741960), (4, 20370980), (5, 16296784), (7, 11640560), (8, 10185490), (10, 8148392), (14, 5820280), (16, 5092745), (20, 4074196), (28, 2910140), (35, 2328112), (40, 2037098), (56, 1455070), (70, 1164056), (80, 1018549), (112, 727535), (140, 582028), (227, 358960), (280, 291014), (454, 179480), (560, 145507), (641, 127120), (908, 89740), (1135, 71792), (1282, 63560), (1589, 51280), (1816, 44870), (2270, 35896), (2564, 31780), (3178, 25640), (3205, 25424), (3632, 22435), (4487, 18160), (4540, 17948), (5128, 15890), (6356, 12820), (6410, 12712), (7945, 10256), (8974, 9080)]