13908125

素因数分解:

$5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2$

素因数の和:72

約数の個数: 60

約数和(自身を含む): 23017632

約数和(自身を除く): 9109507

約数列:

[1, 5, 7, 11, 17, 25, 35, 55, 77, 85, 119, 125, 175, 187, 275, 289, 385, 425, 595, 625, 875, 935, 1309, 1375, 1445, 1925, 2023, 2125, 2975, 3179, 4375, 4675, 6545, 6875, 7225, 9625, 10115, 10625, 14875, 15895, 22253, 23375, 32725, 36125, 48125, 50575, 74375, 79475, 111265, 116875, 163625, 180625, 252875, 397375, 556325, 818125, 1264375, 1986875, 2781625, 13908125]

約数ペア:

[(1, 13908125), (5, 2781625), (7, 1986875), (11, 1264375), (17, 818125), (25, 556325), (35, 397375), (55, 252875), (77, 180625), (85, 163625), (119, 116875), (125, 111265), (175, 79475), (187, 74375), (275, 50575), (289, 48125), (385, 36125), (425, 32725), (595, 23375), (625, 22253), (875, 15895), (935, 14875), (1309, 10625), (1375, 10115), (1445, 9625), (1925, 7225), (2023, 6875), (2125, 6545), (2975, 4675), (3179, 4375)]