1980825

素因数分解:

$3^1\times 5^2\times 7^4\times {\mathrm{11}}^1$

素因数の和:52

約数の個数: 60

約数和(自身を含む): 4167888

約数和(自身を除く): 2187063

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 49, 55, 75, 77, 105, 147, 165, 175, 231, 245, 275, 343, 385, 525, 539, 735, 825, 1029, 1155, 1225, 1617, 1715, 1925, 2401, 2695, 3675, 3773, 5145, 5775, 7203, 8085, 8575, 11319, 12005, 13475, 18865, 25725, 26411, 36015, 40425, 56595, 60025, 79233, 94325, 132055, 180075, 282975, 396165, 660275, 1980825]

約数ペア:

[(1, 1980825), (3, 660275), (5, 396165), (7, 282975), (11, 180075), (15, 132055), (21, 94325), (25, 79233), (33, 60025), (35, 56595), (49, 40425), (55, 36015), (75, 26411), (77, 25725), (105, 18865), (147, 13475), (165, 12005), (175, 11319), (231, 8575), (245, 8085), (275, 7203), (343, 5775), (385, 5145), (525, 3773), (539, 3675), (735, 2695), (825, 2401), (1029, 1925), (1155, 1715), (1225, 1617)]