20566144

素因数分解:

$2^7\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1$

素因数の和:189

約数の個数: 64

約数和(自身を含む): 43476480

約数和(自身を除く): 22910336

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 71, 73, 124, 128, 142, 146, 248, 284, 292, 496, 568, 584, 992, 1136, 1168, 1984, 2201, 2263, 2272, 2336, 3968, 4402, 4526, 4544, 4672, 5183, 8804, 9052, 9088, 9344, 10366, 17608, 18104, 20732, 35216, 36208, 41464, 70432, 72416, 82928, 140864, 144832, 160673, 165856, 281728, 289664, 321346, 331712, 642692, 663424, 1285384, 2570768, 5141536, 10283072, 20566144]

約数ペア:

[(1, 20566144), (2, 10283072), (4, 5141536), (8, 2570768), (16, 1285384), (31, 663424), (32, 642692), (62, 331712), (64, 321346), (71, 289664), (73, 281728), (124, 165856), (128, 160673), (142, 144832), (146, 140864), (248, 82928), (284, 72416), (292, 70432), (496, 41464), (568, 36208), (584, 35216), (992, 20732), (1136, 18104), (1168, 17608), (1984, 10366), (2201, 9344), (2263, 9088), (2272, 9052), (2336, 8804), (3968, 5183), (4402, 4672), (4526, 4544)]