21173075

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:692

約数の個数: 48

約数和(自身を含む): 34712064

約数和(自身を除く): 13538989

約数列:

[1, 5, 7, 11, 17, 25, 35, 55, 77, 85, 119, 175, 187, 275, 385, 425, 595, 647, 935, 1309, 1925, 2975, 3235, 4529, 4675, 6545, 7117, 10999, 16175, 22645, 32725, 35585, 49819, 54995, 76993, 113225, 120989, 177925, 249095, 274975, 384965, 604945, 846923, 1245475, 1924825, 3024725, 4234615, 21173075]

約数ペア:

[(1, 21173075), (5, 4234615), (7, 3024725), (11, 1924825), (17, 1245475), (25, 846923), (35, 604945), (55, 384965), (77, 274975), (85, 249095), (119, 177925), (175, 120989), (187, 113225), (275, 76993), (385, 54995), (425, 49819), (595, 35585), (647, 32725), (935, 22645), (1309, 16175), (1925, 10999), (2975, 7117), (3235, 6545), (4529, 4675)]