20123682020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{349}}^1\times {\mathrm{221773}}^1$

素因数の和:222144

約数の個数: 48

約数和(自身を含む): 45641089200

約数和(自身を除く): 25517407180

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 349, 698, 1396, 1745, 3490, 4537, 6980, 9074, 18148, 22685, 45370, 90740, 221773, 443546, 887092, 1108865, 2217730, 2883049, 4435460, 5766098, 11532196, 14415245, 28830490, 57660980, 77398777, 154797554, 309595108, 386993885, 773987770, 1006184101, 1547975540, 2012368202, 4024736404, 5030920505, 10061841010, 20123682020]

約数ペア:

[(1, 20123682020), (2, 10061841010), (4, 5030920505), (5, 4024736404), (10, 2012368202), (13, 1547975540), (20, 1006184101), (26, 773987770), (52, 386993885), (65, 309595108), (130, 154797554), (260, 77398777), (349, 57660980), (698, 28830490), (1396, 14415245), (1745, 11532196), (3490, 5766098), (4537, 4435460), (6980, 2883049), (9074, 2217730), (18148, 1108865), (22685, 887092), (45370, 443546), (90740, 221773)]