21271456

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{523}}^1$

素因数の和:605

約数の個数: 48

約数和(自身を含む): 44368128

約数和(自身を除く): 23096672

約数列:

[1, 2, 4, 8, 16, 31, 32, 41, 62, 82, 124, 164, 248, 328, 496, 523, 656, 992, 1046, 1271, 1312, 2092, 2542, 4184, 5084, 8368, 10168, 16213, 16736, 20336, 21443, 32426, 40672, 42886, 64852, 85772, 129704, 171544, 259408, 343088, 518816, 664733, 686176, 1329466, 2658932, 5317864, 10635728, 21271456]

約数ペア:

[(1, 21271456), (2, 10635728), (4, 5317864), (8, 2658932), (16, 1329466), (31, 686176), (32, 664733), (41, 518816), (62, 343088), (82, 259408), (124, 171544), (164, 129704), (248, 85772), (328, 64852), (496, 42886), (523, 40672), (656, 32426), (992, 21443), (1046, 20336), (1271, 16736), (1312, 16213), (2092, 10168), (2542, 8368), (4184, 5084)]