20645163

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^3$

素因数の和:117

約数の個数: 48

約数和(自身を含む): 38418432

約数和(自身を除く): 17773269

約数列:

[1, 3, 7, 9, 11, 21, 31, 33, 63, 77, 93, 99, 217, 231, 279, 341, 651, 693, 961, 1023, 1953, 2387, 2883, 3069, 6727, 7161, 8649, 10571, 20181, 21483, 29791, 31713, 60543, 73997, 89373, 95139, 208537, 221991, 268119, 327701, 625611, 665973, 983103, 1876833, 2293907, 2949309, 6881721, 20645163]

約数ペア:

[(1, 20645163), (3, 6881721), (7, 2949309), (9, 2293907), (11, 1876833), (21, 983103), (31, 665973), (33, 625611), (63, 327701), (77, 268119), (93, 221991), (99, 208537), (217, 95139), (231, 89373), (279, 73997), (341, 60543), (651, 31713), (693, 29791), (961, 21483), (1023, 20181), (1953, 10571), (2387, 8649), (2883, 7161), (3069, 6727)]