21271572

素因数分解:

$2^2\times 3^4\times 7^1\times {\mathrm{83}}^1\times {\mathrm{113}}^1$

素因数の和:219

約数の個数: 120

約数和(自身を含む): 64886976

約数和(自身を除く): 43615404

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 83, 84, 108, 113, 126, 162, 166, 189, 226, 249, 252, 324, 332, 339, 378, 452, 498, 567, 581, 678, 747, 756, 791, 996, 1017, 1134, 1162, 1356, 1494, 1582, 1743, 2034, 2241, 2268, 2324, 2373, 2988, 3051, 3164, 3486, 4068, 4482, 4746, 5229, 6102, 6723, 6972, 7119, 8964, 9153, 9379, 9492, 10458, 12204, 13446, 14238, 15687, 18306, 18758, 20916, 21357, 26892, 28137, 28476, 31374, 36612, 37516, 42714, 47061, 56274, 62748, 64071, 65653, 84411, 85428, 94122, 112548, 128142, 131306, 168822, 188244, 196959, 253233, 256284, 262612, 337644, 393918, 506466, 590877, 759699, 787836, 1012932, 1181754, 1519398, 1772631, 2363508, 3038796, 3545262, 5317893, 7090524, 10635786, 21271572]

約数ペア:

[(1, 21271572), (2, 10635786), (3, 7090524), (4, 5317893), (6, 3545262), (7, 3038796), (9, 2363508), (12, 1772631), (14, 1519398), (18, 1181754), (21, 1012932), (27, 787836), (28, 759699), (36, 590877), (42, 506466), (54, 393918), (63, 337644), (81, 262612), (83, 256284), (84, 253233), (108, 196959), (113, 188244), (126, 168822), (162, 131306), (166, 128142), (189, 112548), (226, 94122), (249, 85428), (252, 84411), (324, 65653), (332, 64071), (339, 62748), (378, 56274), (452, 47061), (498, 42714), (567, 37516), (581, 36612), (678, 31374), (747, 28476), (756, 28137), (791, 26892), (996, 21357), (1017, 20916), (1134, 18758), (1162, 18306), (1356, 15687), (1494, 14238), (1582, 13446), (1743, 12204), (2034, 10458), (2241, 9492), (2268, 9379), (2324, 9153), (2373, 8964), (2988, 7119), (3051, 6972), (3164, 6723), (3486, 6102), (4068, 5229), (4482, 4746)]