20356828

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 19156772

約数列:

[1, 2, 4, 19, 38, 41, 47, 76, 82, 94, 139, 164, 188, 278, 556, 779, 893, 1558, 1786, 1927, 2641, 3116, 3572, 3854, 5282, 5699, 6533, 7708, 10564, 11398, 13066, 22796, 26132, 36613, 73226, 108281, 124127, 146452, 216562, 248254, 267853, 433124, 496508, 535706, 1071412, 5089207, 10178414, 20356828]

約数ペア:

[(1, 20356828), (2, 10178414), (4, 5089207), (19, 1071412), (38, 535706), (41, 496508), (47, 433124), (76, 267853), (82, 248254), (94, 216562), (139, 146452), (164, 124127), (188, 108281), (278, 73226), (556, 36613), (779, 26132), (893, 22796), (1558, 13066), (1786, 11398), (1927, 10564), (2641, 7708), (3116, 6533), (3572, 5699), (3854, 5282)]