80785880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{9949}}^1$

素因数の和:9996

約数の個数: 64

約数和(自身を含む): 214920000

約数和(自身を除く): 134134120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 116, 140, 145, 203, 232, 280, 290, 406, 580, 812, 1015, 1160, 1624, 2030, 4060, 8120, 9949, 19898, 39796, 49745, 69643, 79592, 99490, 139286, 198980, 278572, 288521, 348215, 397960, 557144, 577042, 696430, 1154084, 1392860, 1442605, 2019647, 2308168, 2785720, 2885210, 4039294, 5770420, 8078588, 10098235, 11540840, 16157176, 20196470, 40392940, 80785880]

約数ペア:

[(1, 80785880), (2, 40392940), (4, 20196470), (5, 16157176), (7, 11540840), (8, 10098235), (10, 8078588), (14, 5770420), (20, 4039294), (28, 2885210), (29, 2785720), (35, 2308168), (40, 2019647), (56, 1442605), (58, 1392860), (70, 1154084), (116, 696430), (140, 577042), (145, 557144), (203, 397960), (232, 348215), (280, 288521), (290, 278572), (406, 198980), (580, 139286), (812, 99490), (1015, 79592), (1160, 69643), (1624, 49745), (2030, 39796), (4060, 19898), (8120, 9949)]