81362560

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6691}}^1$

素因数の和:6729

約数の個数: 64

約数和(自身を含む): 204775200

約数和(自身を除く): 123412640

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 64, 76, 80, 95, 128, 152, 160, 190, 304, 320, 380, 608, 640, 760, 1216, 1520, 2432, 3040, 6080, 6691, 12160, 13382, 26764, 33455, 53528, 66910, 107056, 127129, 133820, 214112, 254258, 267640, 428224, 508516, 535280, 635645, 856448, 1017032, 1070560, 1271290, 2034064, 2141120, 2542580, 4068128, 4282240, 5085160, 8136256, 10170320, 16272512, 20340640, 40681280, 81362560]

約数ペア:

[(1, 81362560), (2, 40681280), (4, 20340640), (5, 16272512), (8, 10170320), (10, 8136256), (16, 5085160), (19, 4282240), (20, 4068128), (32, 2542580), (38, 2141120), (40, 2034064), (64, 1271290), (76, 1070560), (80, 1017032), (95, 856448), (128, 635645), (152, 535280), (160, 508516), (190, 428224), (304, 267640), (320, 254258), (380, 214112), (608, 133820), (640, 127129), (760, 107056), (1216, 66910), (1520, 53528), (2432, 33455), (3040, 26764), (6080, 13382), (6691, 12160)]