21897414

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 144

約数和(自身を含む): 62848656

約数和(自身を除く): 40951242

約数列:

[1, 2, 3, 6, 7, 9, 11, 14, 18, 21, 22, 33, 37, 42, 49, 61, 63, 66, 74, 77, 98, 99, 111, 122, 126, 147, 154, 183, 198, 222, 231, 259, 294, 333, 366, 407, 427, 441, 462, 518, 539, 549, 666, 671, 693, 777, 814, 854, 882, 1078, 1098, 1221, 1281, 1342, 1386, 1554, 1617, 1813, 2013, 2257, 2331, 2442, 2562, 2849, 2989, 3234, 3626, 3663, 3843, 4026, 4514, 4662, 4697, 4851, 5439, 5698, 5978, 6039, 6771, 7326, 7686, 8547, 8967, 9394, 9702, 10878, 12078, 13542, 14091, 15799, 16317, 17094, 17934, 19943, 20313, 24827, 25641, 26901, 28182, 31598, 32634, 32879, 39886, 40626, 42273, 47397, 49654, 51282, 53802, 59829, 65758, 74481, 84546, 94794, 98637, 110593, 119658, 142191, 148962, 173789, 179487, 197274, 221186, 223443, 284382, 295911, 331779, 347578, 358974, 446886, 521367, 591822, 663558, 995337, 1042734, 1216523, 1564101, 1990674, 2433046, 3128202, 3649569, 7299138, 10948707, 21897414]

約数ペア:

[(1, 21897414), (2, 10948707), (3, 7299138), (6, 3649569), (7, 3128202), (9, 2433046), (11, 1990674), (14, 1564101), (18, 1216523), (21, 1042734), (22, 995337), (33, 663558), (37, 591822), (42, 521367), (49, 446886), (61, 358974), (63, 347578), (66, 331779), (74, 295911), (77, 284382), (98, 223443), (99, 221186), (111, 197274), (122, 179487), (126, 173789), (147, 148962), (154, 142191), (183, 119658), (198, 110593), (222, 98637), (231, 94794), (259, 84546), (294, 74481), (333, 65758), (366, 59829), (407, 53802), (427, 51282), (441, 49654), (462, 47397), (518, 42273), (539, 40626), (549, 39886), (666, 32879), (671, 32634), (693, 31598), (777, 28182), (814, 26901), (854, 25641), (882, 24827), (1078, 20313), (1098, 19943), (1221, 17934), (1281, 17094), (1342, 16317), (1386, 15799), (1554, 14091), (1617, 13542), (1813, 12078), (2013, 10878), (2257, 9702), (2331, 9394), (2442, 8967), (2562, 8547), (2849, 7686), (2989, 7326), (3234, 6771), (3626, 6039), (3663, 5978), (3843, 5698), (4026, 5439), (4514, 4851), (4662, 4697)]