128520425

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{743}}^1$

素因数の和:818

約数の個数: 48

約数和(自身を含む): 189309312

約数和(自身を除く): 60788887

約数列:

[1, 5, 11, 17, 25, 37, 55, 85, 185, 187, 275, 407, 425, 629, 743, 925, 935, 2035, 3145, 3715, 4675, 6919, 8173, 10175, 12631, 15725, 18575, 27491, 34595, 40865, 63155, 137455, 138941, 172975, 204325, 302401, 315775, 467347, 687275, 694705, 1512005, 2336735, 3473525, 5140817, 7560025, 11683675, 25704085, 128520425]

約数ペア:

[(1, 128520425), (5, 25704085), (11, 11683675), (17, 7560025), (25, 5140817), (37, 3473525), (55, 2336735), (85, 1512005), (185, 694705), (187, 687275), (275, 467347), (407, 315775), (425, 302401), (629, 204325), (743, 172975), (925, 138941), (935, 137455), (2035, 63155), (3145, 40865), (3715, 34595), (4675, 27491), (6919, 18575), (8173, 15725), (10175, 12631)]