81619839

素因数分解:

$3^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{191}}^1$

素因数の和:250

約数の個数: 96

約数和(自身を含む): 157593600

約数和(自身を除く): 75973761

約数列:

[1, 3, 7, 9, 17, 19, 21, 27, 49, 51, 57, 63, 119, 133, 147, 153, 171, 189, 191, 323, 357, 399, 441, 459, 513, 573, 833, 931, 969, 1071, 1197, 1323, 1337, 1719, 2261, 2499, 2793, 2907, 3213, 3247, 3591, 3629, 4011, 5157, 6783, 7497, 8379, 8721, 9359, 9741, 10887, 12033, 15827, 20349, 22491, 22729, 25137, 25403, 28077, 29223, 32661, 36099, 47481, 61047, 61693, 68187, 76209, 84231, 87669, 97983, 142443, 159103, 177821, 185079, 204561, 228627, 252693, 427329, 431851, 477309, 533463, 555237, 613683, 685881, 1295553, 1431927, 1600389, 1665711, 3022957, 3886659, 4295781, 4801167, 9068871, 11659977, 27206613, 81619839]

約数ペア:

[(1, 81619839), (3, 27206613), (7, 11659977), (9, 9068871), (17, 4801167), (19, 4295781), (21, 3886659), (27, 3022957), (49, 1665711), (51, 1600389), (57, 1431927), (63, 1295553), (119, 685881), (133, 613683), (147, 555237), (153, 533463), (171, 477309), (189, 431851), (191, 427329), (323, 252693), (357, 228627), (399, 204561), (441, 185079), (459, 177821), (513, 159103), (573, 142443), (833, 97983), (931, 87669), (969, 84231), (1071, 76209), (1197, 68187), (1323, 61693), (1337, 61047), (1719, 47481), (2261, 36099), (2499, 32661), (2793, 29223), (2907, 28077), (3213, 25403), (3247, 25137), (3591, 22729), (3629, 22491), (4011, 20349), (5157, 15827), (6783, 12033), (7497, 10887), (8379, 9741), (8721, 9359)]