21655025

素因数分解:

$5^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:314

約数の個数: 48

約数和(自身を含む): 33747840

約数和(自身を除く): 12092815

約数列:

[1, 5, 7, 17, 25, 29, 35, 85, 119, 145, 175, 203, 251, 425, 493, 595, 725, 1015, 1255, 1757, 2465, 2975, 3451, 4267, 5075, 6275, 7279, 8785, 12325, 17255, 21335, 29869, 36395, 43925, 50953, 86275, 106675, 123743, 149345, 181975, 254765, 618715, 746725, 866201, 1273825, 3093575, 4331005, 21655025]

約数ペア:

[(1, 21655025), (5, 4331005), (7, 3093575), (17, 1273825), (25, 866201), (29, 746725), (35, 618715), (85, 254765), (119, 181975), (145, 149345), (175, 123743), (203, 106675), (251, 86275), (425, 50953), (493, 43925), (595, 36395), (725, 29869), (1015, 21335), (1255, 17255), (1757, 12325), (2465, 8785), (2975, 7279), (3451, 6275), (4267, 5075)]