20102775

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{59}}^2$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 42152064

約数和(自身を除く): 22049289

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 59, 75, 77, 105, 165, 175, 177, 231, 275, 295, 385, 413, 525, 649, 825, 885, 1155, 1239, 1475, 1925, 1947, 2065, 3245, 3481, 4425, 4543, 5775, 6195, 9735, 10325, 10443, 13629, 16225, 17405, 22715, 24367, 30975, 38291, 48675, 52215, 68145, 73101, 87025, 113575, 114873, 121835, 191455, 261075, 268037, 340725, 365505, 574365, 609175, 804111, 957275, 1340185, 1827525, 2871825, 4020555, 6700925, 20102775]

約数ペア:

[(1, 20102775), (3, 6700925), (5, 4020555), (7, 2871825), (11, 1827525), (15, 1340185), (21, 957275), (25, 804111), (33, 609175), (35, 574365), (55, 365505), (59, 340725), (75, 268037), (77, 261075), (105, 191455), (165, 121835), (175, 114873), (177, 113575), (231, 87025), (275, 73101), (295, 68145), (385, 52215), (413, 48675), (525, 38291), (649, 30975), (825, 24367), (885, 22715), (1155, 17405), (1239, 16225), (1475, 13629), (1925, 10443), (1947, 10325), (2065, 9735), (3245, 6195), (3481, 5775), (4425, 4543)]