156780039

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{1223}}^1$

素因数の和:1431

約数の個数: 32

約数和(自身を含む): 238533120

約数和(自身を除く): 81753081

約数列:

[1, 3, 13, 19, 39, 57, 173, 247, 519, 741, 1223, 2249, 3287, 3669, 6747, 9861, 15899, 23237, 42731, 47697, 69711, 128193, 211579, 302081, 634737, 906243, 2750527, 4020001, 8251581, 12060003, 52260013, 156780039]

約数ペア:

[(1, 156780039), (3, 52260013), (13, 12060003), (19, 8251581), (39, 4020001), (57, 2750527), (173, 906243), (247, 634737), (519, 302081), (741, 211579), (1223, 128193), (2249, 69711), (3287, 47697), (3669, 42731), (6747, 23237), (9861, 15899)]