19828375

素因数分解:

$5^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:113

約数の個数: 64

約数和(自身を含む): 31629312

約数和(自身を除く): 11800937

約数列:

[1, 5, 7, 17, 25, 31, 35, 43, 85, 119, 125, 155, 175, 215, 217, 301, 425, 527, 595, 731, 775, 875, 1075, 1085, 1333, 1505, 2125, 2635, 2975, 3655, 3689, 3875, 5117, 5375, 5425, 6665, 7525, 9331, 13175, 14875, 18275, 18445, 22661, 25585, 27125, 33325, 37625, 46655, 65875, 91375, 92225, 113305, 127925, 158627, 166625, 233275, 461125, 566525, 639625, 793135, 1166375, 2832625, 3965675, 19828375]

約数ペア:

[(1, 19828375), (5, 3965675), (7, 2832625), (17, 1166375), (25, 793135), (31, 639625), (35, 566525), (43, 461125), (85, 233275), (119, 166625), (125, 158627), (155, 127925), (175, 113305), (215, 92225), (217, 91375), (301, 65875), (425, 46655), (527, 37625), (595, 33325), (731, 27125), (775, 25585), (875, 22661), (1075, 18445), (1085, 18275), (1333, 14875), (1505, 13175), (2125, 9331), (2635, 7525), (2975, 6665), (3655, 5425), (3689, 5375), (3875, 5117)]