40838320

素因数分解:

$2^4\times 5^1\times {\mathrm{631}}^1\times {\mathrm{809}}^1$

素因数の和:1453

約数の個数: 40

約数和(自身を含む): 95217120

約数和(自身を除く): 54378800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 631, 809, 1262, 1618, 2524, 3155, 3236, 4045, 5048, 6310, 6472, 8090, 10096, 12620, 12944, 16180, 25240, 32360, 50480, 64720, 510479, 1020958, 2041916, 2552395, 4083832, 5104790, 8167664, 10209580, 20419160, 40838320]

約数ペア:

[(1, 40838320), (2, 20419160), (4, 10209580), (5, 8167664), (8, 5104790), (10, 4083832), (16, 2552395), (20, 2041916), (40, 1020958), (80, 510479), (631, 64720), (809, 50480), (1262, 32360), (1618, 25240), (2524, 16180), (3155, 12944), (3236, 12620), (4045, 10096), (5048, 8090), (6310, 6472)]