21403272

素因数分解:

$2^3\times 3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{251}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 65318400

約数和(自身を除く): 43915128

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 17, 19, 22, 24, 33, 34, 38, 44, 51, 57, 66, 68, 76, 88, 102, 114, 132, 136, 152, 187, 204, 209, 228, 251, 264, 323, 374, 408, 418, 456, 502, 561, 627, 646, 748, 753, 836, 969, 1004, 1122, 1254, 1292, 1496, 1506, 1672, 1938, 2008, 2244, 2508, 2584, 2761, 3012, 3553, 3876, 4267, 4488, 4769, 5016, 5522, 6024, 7106, 7752, 8283, 8534, 9538, 10659, 11044, 12801, 14212, 14307, 16566, 17068, 19076, 21318, 22088, 25602, 28424, 28614, 33132, 34136, 38152, 42636, 46937, 51204, 52459, 57228, 66264, 81073, 85272, 93874, 102408, 104918, 114456, 140811, 157377, 162146, 187748, 209836, 243219, 281622, 314754, 324292, 375496, 419672, 486438, 563244, 629508, 648584, 891803, 972876, 1126488, 1259016, 1783606, 1945752, 2675409, 3567212, 5350818, 7134424, 10701636, 21403272]

約数ペア:

[(1, 21403272), (2, 10701636), (3, 7134424), (4, 5350818), (6, 3567212), (8, 2675409), (11, 1945752), (12, 1783606), (17, 1259016), (19, 1126488), (22, 972876), (24, 891803), (33, 648584), (34, 629508), (38, 563244), (44, 486438), (51, 419672), (57, 375496), (66, 324292), (68, 314754), (76, 281622), (88, 243219), (102, 209836), (114, 187748), (132, 162146), (136, 157377), (152, 140811), (187, 114456), (204, 104918), (209, 102408), (228, 93874), (251, 85272), (264, 81073), (323, 66264), (374, 57228), (408, 52459), (418, 51204), (456, 46937), (502, 42636), (561, 38152), (627, 34136), (646, 33132), (748, 28614), (753, 28424), (836, 25602), (969, 22088), (1004, 21318), (1122, 19076), (1254, 17068), (1292, 16566), (1496, 14307), (1506, 14212), (1672, 12801), (1938, 11044), (2008, 10659), (2244, 9538), (2508, 8534), (2584, 8283), (2761, 7752), (3012, 7106), (3553, 6024), (3876, 5522), (4267, 5016), (4488, 4769)]