21506870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:126

約数の個数: 128

約数和(自身を含む): 53747712

約数和(自身を除く): 32240842

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 31, 34, 35, 53, 55, 62, 70, 77, 85, 106, 110, 119, 154, 155, 170, 187, 217, 238, 265, 310, 341, 371, 374, 385, 434, 527, 530, 583, 595, 682, 742, 770, 901, 935, 1054, 1085, 1166, 1190, 1309, 1643, 1705, 1802, 1855, 1870, 2170, 2387, 2618, 2635, 2915, 3286, 3410, 3689, 3710, 4081, 4505, 4774, 5270, 5797, 5830, 6307, 6545, 7378, 8162, 8215, 9010, 9911, 11501, 11594, 11935, 12614, 13090, 16430, 18073, 18445, 19822, 20405, 23002, 23870, 27931, 28985, 31535, 36146, 36890, 40579, 40810, 49555, 55862, 57505, 57970, 63070, 69377, 81158, 90365, 99110, 115010, 126511, 138754, 139655, 180730, 195517, 202895, 253022, 279310, 307241, 346885, 391034, 405790, 614482, 632555, 693770, 977585, 1265110, 1536205, 1955170, 2150687, 3072410, 4301374, 10753435, 21506870]

約数ペア:

[(1, 21506870), (2, 10753435), (5, 4301374), (7, 3072410), (10, 2150687), (11, 1955170), (14, 1536205), (17, 1265110), (22, 977585), (31, 693770), (34, 632555), (35, 614482), (53, 405790), (55, 391034), (62, 346885), (70, 307241), (77, 279310), (85, 253022), (106, 202895), (110, 195517), (119, 180730), (154, 139655), (155, 138754), (170, 126511), (187, 115010), (217, 99110), (238, 90365), (265, 81158), (310, 69377), (341, 63070), (371, 57970), (374, 57505), (385, 55862), (434, 49555), (527, 40810), (530, 40579), (583, 36890), (595, 36146), (682, 31535), (742, 28985), (770, 27931), (901, 23870), (935, 23002), (1054, 20405), (1085, 19822), (1166, 18445), (1190, 18073), (1309, 16430), (1643, 13090), (1705, 12614), (1802, 11935), (1855, 11594), (1870, 11501), (2170, 9911), (2387, 9010), (2618, 8215), (2635, 8162), (2915, 7378), (3286, 6545), (3410, 6307), (3689, 5830), (3710, 5797), (4081, 5270), (4505, 4774)]