28307125

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{173}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 46904832

約数和(自身を除く): 18597707

約数列:

[1, 5, 7, 11, 17, 25, 35, 55, 77, 85, 119, 125, 173, 175, 187, 275, 385, 425, 595, 865, 875, 935, 1211, 1309, 1375, 1903, 1925, 2125, 2941, 2975, 4325, 4675, 6055, 6545, 9515, 9625, 13321, 14705, 14875, 20587, 21625, 23375, 30275, 32351, 32725, 47575, 66605, 73525, 102935, 151375, 161755, 163625, 226457, 237875, 333025, 367625, 514675, 808775, 1132285, 1665125, 2573375, 4043875, 5661425, 28307125]

約数ペア:

[(1, 28307125), (5, 5661425), (7, 4043875), (11, 2573375), (17, 1665125), (25, 1132285), (35, 808775), (55, 514675), (77, 367625), (85, 333025), (119, 237875), (125, 226457), (173, 163625), (175, 161755), (187, 151375), (275, 102935), (385, 73525), (425, 66605), (595, 47575), (865, 32725), (875, 32351), (935, 30275), (1211, 23375), (1309, 21625), (1375, 20587), (1903, 14875), (1925, 14705), (2125, 13321), (2941, 9625), (2975, 9515), (4325, 6545), (4675, 6055)]