21329984

素因数分解:

$2^6\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{827}}^1$

素因数の和:883

約数の個数: 56

約数和(自身を含む): 47109888

約数和(自身を除く): 25779904

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 208, 248, 403, 416, 496, 806, 827, 832, 992, 1612, 1654, 1984, 3224, 3308, 6448, 6616, 10751, 12896, 13232, 21502, 25637, 25792, 26464, 43004, 51274, 52928, 86008, 102548, 172016, 205096, 333281, 344032, 410192, 666562, 688064, 820384, 1333124, 1640768, 2666248, 5332496, 10664992, 21329984]

約数ペア:

[(1, 21329984), (2, 10664992), (4, 5332496), (8, 2666248), (13, 1640768), (16, 1333124), (26, 820384), (31, 688064), (32, 666562), (52, 410192), (62, 344032), (64, 333281), (104, 205096), (124, 172016), (208, 102548), (248, 86008), (403, 52928), (416, 51274), (496, 43004), (806, 26464), (827, 25792), (832, 25637), (992, 21502), (1612, 13232), (1654, 12896), (1984, 10751), (3224, 6616), (3308, 6448)]