72640880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{69847}}^1$

素因数の和:69873

約数の個数: 40

約数和(自身を含む): 181884192

約数和(自身を除く): 109243312

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 69847, 139694, 279388, 349235, 558776, 698470, 908011, 1117552, 1396940, 1816022, 2793880, 3632044, 4540055, 5587760, 7264088, 9080110, 14528176, 18160220, 36320440, 72640880]

約数ペア:

[(1, 72640880), (2, 36320440), (4, 18160220), (5, 14528176), (8, 9080110), (10, 7264088), (13, 5587760), (16, 4540055), (20, 3632044), (26, 2793880), (40, 1816022), (52, 1396940), (65, 1117552), (80, 908011), (104, 698470), (130, 558776), (208, 349235), (260, 279388), (520, 139694), (1040, 69847)]