20821872

素因数分解:

$2^4\times 3^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{79}}^1$

素因数の和:143

約数の個数: 120

約数和(自身を含む): 60908800

約数和(自身を除く): 40086928

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 17, 19, 24, 34, 38, 48, 51, 57, 68, 76, 79, 102, 114, 136, 152, 158, 204, 228, 237, 272, 289, 304, 316, 323, 408, 456, 474, 578, 632, 646, 816, 867, 912, 948, 969, 1156, 1264, 1292, 1343, 1501, 1734, 1896, 1938, 2312, 2584, 2686, 3002, 3468, 3792, 3876, 4029, 4503, 4624, 5168, 5372, 5491, 6004, 6936, 7752, 8058, 9006, 10744, 10982, 12008, 13872, 15504, 16116, 16473, 18012, 21488, 21964, 22831, 24016, 25517, 32232, 32946, 36024, 43928, 45662, 51034, 64464, 65892, 68493, 72048, 76551, 87856, 91324, 102068, 131784, 136986, 153102, 182648, 204136, 263568, 273972, 306204, 365296, 408272, 433789, 547944, 612408, 867578, 1095888, 1224816, 1301367, 1735156, 2602734, 3470312, 5205468, 6940624, 10410936, 20821872]

約数ペア:

[(1, 20821872), (2, 10410936), (3, 6940624), (4, 5205468), (6, 3470312), (8, 2602734), (12, 1735156), (16, 1301367), (17, 1224816), (19, 1095888), (24, 867578), (34, 612408), (38, 547944), (48, 433789), (51, 408272), (57, 365296), (68, 306204), (76, 273972), (79, 263568), (102, 204136), (114, 182648), (136, 153102), (152, 136986), (158, 131784), (204, 102068), (228, 91324), (237, 87856), (272, 76551), (289, 72048), (304, 68493), (316, 65892), (323, 64464), (408, 51034), (456, 45662), (474, 43928), (578, 36024), (632, 32946), (646, 32232), (816, 25517), (867, 24016), (912, 22831), (948, 21964), (969, 21488), (1156, 18012), (1264, 16473), (1292, 16116), (1343, 15504), (1501, 13872), (1734, 12008), (1896, 10982), (1938, 10744), (2312, 9006), (2584, 8058), (2686, 7752), (3002, 6936), (3468, 6004), (3792, 5491), (3876, 5372), (4029, 5168), (4503, 4624)]