201780220

素因数分解:

$2^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{127709}}^1$

素因数の和:127797

約数の個数: 24

約数和(自身を含む): 429105600

約数和(自身を除く): 227325380

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 790, 1580, 127709, 255418, 510836, 638545, 1277090, 2554180, 10089011, 20178022, 40356044, 50445055, 100890110, 201780220]

約数ペア:

[(1, 201780220), (2, 100890110), (4, 50445055), (5, 40356044), (10, 20178022), (20, 10089011), (79, 2554180), (158, 1277090), (316, 638545), (395, 510836), (790, 255418), (1580, 127709)]