20499875

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{877}}^1$

素因数の和:920

約数の個数: 32

約数和(自身を含む): 29585088

約数和(自身を除く): 9085213

約数列:

[1, 5, 11, 17, 25, 55, 85, 125, 187, 275, 425, 877, 935, 1375, 2125, 4385, 4675, 9647, 14909, 21925, 23375, 48235, 74545, 109625, 163999, 241175, 372725, 819995, 1205875, 1863625, 4099975, 20499875]

約数ペア:

[(1, 20499875), (5, 4099975), (11, 1863625), (17, 1205875), (25, 819995), (55, 372725), (85, 241175), (125, 163999), (187, 109625), (275, 74545), (425, 48235), (877, 23375), (935, 21925), (1375, 14909), (2125, 9647), (4385, 4675)]