20010100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{18191}}^1$

素因数の和:18216

約数の個数: 36

約数和(自身を含む): 47371968

約数和(自身を除く): 27361868

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 18191, 36382, 72764, 90955, 181910, 200101, 363820, 400202, 454775, 800404, 909550, 1000505, 1819100, 2001010, 4002020, 5002525, 10005050, 20010100]

約数ペア:

[(1, 20010100), (2, 10005050), (4, 5002525), (5, 4002020), (10, 2001010), (11, 1819100), (20, 1000505), (22, 909550), (25, 800404), (44, 454775), (50, 400202), (55, 363820), (100, 200101), (110, 181910), (220, 90955), (275, 72764), (550, 36382), (1100, 18191)]