21590345

素因数分解:

$5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{103}}^1\times {\mathrm{113}}^1$

素因数の和:281

約数の個数: 32

約数和(自身を含む): 30730752

約数和(自身を除く): 9140407

約数列:

[1, 5, 7, 35, 53, 103, 113, 265, 371, 515, 565, 721, 791, 1855, 3605, 3955, 5459, 5989, 11639, 27295, 29945, 38213, 41923, 58195, 81473, 191065, 209615, 407365, 616867, 3084335, 4318069, 21590345]

約数ペア:

[(1, 21590345), (5, 4318069), (7, 3084335), (35, 616867), (53, 407365), (103, 209615), (113, 191065), (265, 81473), (371, 58195), (515, 41923), (565, 38213), (721, 29945), (791, 27295), (1855, 11639), (3605, 5989), (3955, 5459)]