20972784

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{241}}^1$

素因数の和:303

約数の個数: 120

約数和(自身を含む): 64997328

約数和(自身を除く): 44024544

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 37, 42, 48, 49, 56, 74, 84, 98, 111, 112, 147, 148, 168, 196, 222, 241, 259, 294, 296, 336, 392, 444, 482, 518, 588, 592, 723, 777, 784, 888, 964, 1036, 1176, 1446, 1554, 1687, 1776, 1813, 1928, 2072, 2352, 2892, 3108, 3374, 3626, 3856, 4144, 5061, 5439, 5784, 6216, 6748, 7252, 8917, 10122, 10878, 11568, 11809, 12432, 13496, 14504, 17834, 20244, 21756, 23618, 26751, 26992, 29008, 35427, 35668, 40488, 43512, 47236, 53502, 62419, 70854, 71336, 80976, 87024, 94472, 107004, 124838, 141708, 142672, 187257, 188944, 214008, 249676, 283416, 374514, 428016, 436933, 499352, 566832, 749028, 873866, 998704, 1310799, 1498056, 1747732, 2621598, 2996112, 3495464, 5243196, 6990928, 10486392, 20972784]

約数ペア:

[(1, 20972784), (2, 10486392), (3, 6990928), (4, 5243196), (6, 3495464), (7, 2996112), (8, 2621598), (12, 1747732), (14, 1498056), (16, 1310799), (21, 998704), (24, 873866), (28, 749028), (37, 566832), (42, 499352), (48, 436933), (49, 428016), (56, 374514), (74, 283416), (84, 249676), (98, 214008), (111, 188944), (112, 187257), (147, 142672), (148, 141708), (168, 124838), (196, 107004), (222, 94472), (241, 87024), (259, 80976), (294, 71336), (296, 70854), (336, 62419), (392, 53502), (444, 47236), (482, 43512), (518, 40488), (588, 35668), (592, 35427), (723, 29008), (777, 26992), (784, 26751), (888, 23618), (964, 21756), (1036, 20244), (1176, 17834), (1446, 14504), (1554, 13496), (1687, 12432), (1776, 11809), (1813, 11568), (1928, 10878), (2072, 10122), (2352, 8917), (2892, 7252), (3108, 6748), (3374, 6216), (3626, 5784), (3856, 5439), (4144, 5061)]