20657175

素因数分解:

$3^1\times 5^2\times 7^3\times {\mathrm{11}}^1\times {\mathrm{73}}^1$

素因数の和:118

約数の個数: 96

約数和(自身を含む): 44044800

約数和(自身を除く): 23387625

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 49, 55, 73, 75, 77, 105, 147, 165, 175, 219, 231, 245, 275, 343, 365, 385, 511, 525, 539, 735, 803, 825, 1029, 1095, 1155, 1225, 1533, 1617, 1715, 1825, 1925, 2409, 2555, 2695, 3577, 3675, 3773, 4015, 5145, 5475, 5621, 5775, 7665, 8085, 8575, 10731, 11319, 12045, 12775, 13475, 16863, 17885, 18865, 20075, 25039, 25725, 28105, 38325, 39347, 40425, 53655, 56595, 60225, 75117, 84315, 89425, 94325, 118041, 125195, 140525, 196735, 268275, 275429, 282975, 375585, 421575, 590205, 625975, 826287, 983675, 1377145, 1877925, 2951025, 4131435, 6885725, 20657175]

約数ペア:

[(1, 20657175), (3, 6885725), (5, 4131435), (7, 2951025), (11, 1877925), (15, 1377145), (21, 983675), (25, 826287), (33, 625975), (35, 590205), (49, 421575), (55, 375585), (73, 282975), (75, 275429), (77, 268275), (105, 196735), (147, 140525), (165, 125195), (175, 118041), (219, 94325), (231, 89425), (245, 84315), (275, 75117), (343, 60225), (365, 56595), (385, 53655), (511, 40425), (525, 39347), (539, 38325), (735, 28105), (803, 25725), (825, 25039), (1029, 20075), (1095, 18865), (1155, 17885), (1225, 16863), (1533, 13475), (1617, 12775), (1715, 12045), (1825, 11319), (1925, 10731), (2409, 8575), (2555, 8085), (2695, 7665), (3577, 5775), (3675, 5621), (3773, 5475), (4015, 5145)]