20964625

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{193}}^1$

素因数の和:298

約数の個数: 32

約数和(自身を含む): 29053440

約数和(自身を除く): 8088815

約数列:

[1, 5, 11, 25, 55, 79, 125, 193, 275, 395, 869, 965, 1375, 1975, 2123, 4345, 4825, 9875, 10615, 15247, 21725, 24125, 53075, 76235, 108625, 167717, 265375, 381175, 838585, 1905875, 4192925, 20964625]

約数ペア:

[(1, 20964625), (5, 4192925), (11, 1905875), (25, 838585), (55, 381175), (79, 265375), (125, 167717), (193, 108625), (275, 76235), (395, 53075), (869, 24125), (965, 21725), (1375, 15247), (1975, 10615), (2123, 9875), (4345, 4825)]