19713675

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1$

素因数の和:244

約数の個数: 48

約数和(自身を含む): 34442240

約数和(自身を除く): 14728565

約数列:

[1, 3, 5, 15, 25, 31, 61, 75, 93, 139, 155, 183, 305, 417, 465, 695, 775, 915, 1525, 1891, 2085, 2325, 3475, 4309, 4575, 5673, 8479, 9455, 10425, 12927, 21545, 25437, 28365, 42395, 47275, 64635, 107725, 127185, 141825, 211975, 262849, 323175, 635925, 788547, 1314245, 3942735, 6571225, 19713675]

約数ペア:

[(1, 19713675), (3, 6571225), (5, 3942735), (15, 1314245), (25, 788547), (31, 635925), (61, 323175), (75, 262849), (93, 211975), (139, 141825), (155, 127185), (183, 107725), (305, 64635), (417, 47275), (465, 42395), (695, 28365), (775, 25437), (915, 21545), (1525, 12927), (1891, 10425), (2085, 9455), (2325, 8479), (3475, 5673), (4309, 4575)]