202806920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{117911}}^1$

素因数の和:117965

約数の個数: 32

約数和(自身を含む): 466931520

約数和(自身を除く): 264124600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 117911, 235822, 471644, 589555, 943288, 1179110, 2358220, 4716440, 5070173, 10140346, 20280692, 25350865, 40561384, 50701730, 101403460, 202806920]

約数ペア:

[(1, 202806920), (2, 101403460), (4, 50701730), (5, 40561384), (8, 25350865), (10, 20280692), (20, 10140346), (40, 5070173), (43, 4716440), (86, 2358220), (172, 1179110), (215, 943288), (344, 589555), (430, 471644), (860, 235822), (1720, 117911)]