21688672

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{271}}^1$

素因数の和:383

約数の個数: 48

約数和(自身を含む): 44622144

約数和(自身を除く): 22933472

約数列:

[1, 2, 4, 8, 16, 32, 41, 61, 82, 122, 164, 244, 271, 328, 488, 542, 656, 976, 1084, 1312, 1952, 2168, 2501, 4336, 5002, 8672, 10004, 11111, 16531, 20008, 22222, 33062, 40016, 44444, 66124, 80032, 88888, 132248, 177776, 264496, 355552, 528992, 677771, 1355542, 2711084, 5422168, 10844336, 21688672]

約数ペア:

[(1, 21688672), (2, 10844336), (4, 5422168), (8, 2711084), (16, 1355542), (32, 677771), (41, 528992), (61, 355552), (82, 264496), (122, 177776), (164, 132248), (244, 88888), (271, 80032), (328, 66124), (488, 44444), (542, 40016), (656, 33062), (976, 22222), (1084, 20008), (1312, 16531), (1952, 11111), (2168, 10004), (2501, 8672), (4336, 5002)]