20483500

素因数分解:

$2^2\times 5^3\times {\mathrm{71}}^1\times {\mathrm{577}}^1$

素因数の和:667

約数の個数: 48

約数和(自身を含む): 45444672

約数和(自身を除く): 24961172

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 125, 142, 250, 284, 355, 500, 577, 710, 1154, 1420, 1775, 2308, 2885, 3550, 5770, 7100, 8875, 11540, 14425, 17750, 28850, 35500, 40967, 57700, 72125, 81934, 144250, 163868, 204835, 288500, 409670, 819340, 1024175, 2048350, 4096700, 5120875, 10241750, 20483500]

約数ペア:

[(1, 20483500), (2, 10241750), (4, 5120875), (5, 4096700), (10, 2048350), (20, 1024175), (25, 819340), (50, 409670), (71, 288500), (100, 204835), (125, 163868), (142, 144250), (250, 81934), (284, 72125), (355, 57700), (500, 40967), (577, 35500), (710, 28850), (1154, 17750), (1420, 14425), (1775, 11540), (2308, 8875), (2885, 7100), (3550, 5770)]