20191744

素因数分解:

$2^9\times {\mathrm{113}}^1\times {\mathrm{349}}^1$

素因数の和:480

約数の個数: 40

約数和(自身を含む): 40817700

約数和(自身を除く): 20625956

約数列:

[1, 2, 4, 8, 16, 32, 64, 113, 128, 226, 256, 349, 452, 512, 698, 904, 1396, 1808, 2792, 3616, 5584, 7232, 11168, 14464, 22336, 28928, 39437, 44672, 57856, 78874, 89344, 157748, 178688, 315496, 630992, 1261984, 2523968, 5047936, 10095872, 20191744]

約数ペア:

[(1, 20191744), (2, 10095872), (4, 5047936), (8, 2523968), (16, 1261984), (32, 630992), (64, 315496), (113, 178688), (128, 157748), (226, 89344), (256, 78874), (349, 57856), (452, 44672), (512, 39437), (698, 28928), (904, 22336), (1396, 14464), (1808, 11168), (2792, 7232), (3616, 5584)]