20778338

素因数分解:

$2^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{373}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 37483776

約数和(自身を除く): 16705438

約数列:

[1, 2, 7, 14, 23, 46, 161, 173, 322, 346, 373, 746, 1211, 2422, 2611, 3979, 5222, 7958, 8579, 17158, 27853, 55706, 60053, 64529, 120106, 129058, 451703, 903406, 1484167, 2968334, 10389169, 20778338]

約数ペア:

[(1, 20778338), (2, 10389169), (7, 2968334), (14, 1484167), (23, 903406), (46, 451703), (161, 129058), (173, 120106), (322, 64529), (346, 60053), (373, 55706), (746, 27853), (1211, 17158), (2422, 8579), (2611, 7958), (3979, 5222)]