72000005

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:266

約数の個数: 64

約数和(自身を含む): 115458048

約数和(自身を除く): 43458043

約数列:

[1, 5, 7, 11, 23, 35, 47, 55, 77, 115, 161, 173, 235, 253, 329, 385, 517, 805, 865, 1081, 1211, 1265, 1645, 1771, 1903, 2585, 3619, 3979, 5405, 6055, 7567, 8131, 8855, 9515, 11891, 13321, 18095, 19895, 27853, 37835, 40655, 43769, 56917, 59455, 66605, 83237, 89441, 139265, 187013, 218845, 284585, 306383, 416185, 447205, 626087, 935065, 1309091, 1531915, 2057143, 3130435, 6545455, 10285715, 14400001, 72000005]

約数ペア:

[(1, 72000005), (5, 14400001), (7, 10285715), (11, 6545455), (23, 3130435), (35, 2057143), (47, 1531915), (55, 1309091), (77, 935065), (115, 626087), (161, 447205), (173, 416185), (235, 306383), (253, 284585), (329, 218845), (385, 187013), (517, 139265), (805, 89441), (865, 83237), (1081, 66605), (1211, 59455), (1265, 56917), (1645, 43769), (1771, 40655), (1903, 37835), (2585, 27853), (3619, 19895), (3979, 18095), (5405, 13321), (6055, 11891), (7567, 9515), (8131, 8855)]