201688720

素因数分解:

$2^4\times 5^1\times {\mathrm{389}}^1\times {\mathrm{6481}}^1$

素因数の和:6883

約数の個数: 40

約数和(自身を含む): 470204280

約数和(自身を除く): 268515560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 389, 778, 1556, 1945, 3112, 3890, 6224, 6481, 7780, 12962, 15560, 25924, 31120, 32405, 51848, 64810, 103696, 129620, 259240, 518480, 2521109, 5042218, 10084436, 12605545, 20168872, 25211090, 40337744, 50422180, 100844360, 201688720]

約数ペア:

[(1, 201688720), (2, 100844360), (4, 50422180), (5, 40337744), (8, 25211090), (10, 20168872), (16, 12605545), (20, 10084436), (40, 5042218), (80, 2521109), (389, 518480), (778, 259240), (1556, 129620), (1945, 103696), (3112, 64810), (3890, 51848), (6224, 32405), (6481, 31120), (7780, 25924), (12962, 15560)]