21663780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:413

約数の個数: 96

約数和(自身を含む): 65390976

約数和(自身を除く): 43727196

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 67, 68, 85, 102, 134, 170, 201, 204, 255, 268, 317, 335, 340, 402, 510, 634, 670, 804, 951, 1005, 1020, 1139, 1268, 1340, 1585, 1902, 2010, 2278, 3170, 3417, 3804, 4020, 4556, 4755, 5389, 5695, 6340, 6834, 9510, 10778, 11390, 13668, 16167, 17085, 19020, 21239, 21556, 22780, 26945, 32334, 34170, 42478, 53890, 63717, 64668, 68340, 80835, 84956, 106195, 107780, 127434, 161670, 212390, 254868, 318585, 323340, 361063, 424780, 637170, 722126, 1083189, 1274340, 1444252, 1805315, 2166378, 3610630, 4332756, 5415945, 7221260, 10831890, 21663780]

約数ペア:

[(1, 21663780), (2, 10831890), (3, 7221260), (4, 5415945), (5, 4332756), (6, 3610630), (10, 2166378), (12, 1805315), (15, 1444252), (17, 1274340), (20, 1083189), (30, 722126), (34, 637170), (51, 424780), (60, 361063), (67, 323340), (68, 318585), (85, 254868), (102, 212390), (134, 161670), (170, 127434), (201, 107780), (204, 106195), (255, 84956), (268, 80835), (317, 68340), (335, 64668), (340, 63717), (402, 53890), (510, 42478), (634, 34170), (670, 32334), (804, 26945), (951, 22780), (1005, 21556), (1020, 21239), (1139, 19020), (1268, 17085), (1340, 16167), (1585, 13668), (1902, 11390), (2010, 10778), (2278, 9510), (3170, 6834), (3417, 6340), (3804, 5695), (4020, 5389), (4556, 4755)]