20685566

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:161

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 18505474

約数列:

[1, 2, 11, 17, 19, 22, 34, 38, 41, 71, 82, 142, 187, 209, 323, 374, 418, 451, 646, 697, 779, 781, 902, 1207, 1349, 1394, 1558, 1562, 2414, 2698, 2911, 3553, 5822, 7106, 7667, 8569, 13243, 13277, 14839, 15334, 17138, 22933, 26486, 26554, 29678, 32021, 45866, 49487, 55309, 64042, 98974, 110618, 145673, 252263, 291346, 504526, 544357, 608399, 940253, 1088714, 1216798, 1880506, 10342783, 20685566]

約数ペア:

[(1, 20685566), (2, 10342783), (11, 1880506), (17, 1216798), (19, 1088714), (22, 940253), (34, 608399), (38, 544357), (41, 504526), (71, 291346), (82, 252263), (142, 145673), (187, 110618), (209, 98974), (323, 64042), (374, 55309), (418, 49487), (451, 45866), (646, 32021), (697, 29678), (779, 26554), (781, 26486), (902, 22933), (1207, 17138), (1349, 15334), (1394, 14839), (1558, 13277), (1562, 13243), (2414, 8569), (2698, 7667), (2911, 7106), (3553, 5822)]