20472100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{503}}^1$

素因数の和:565

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 29399708

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 37, 44, 50, 55, 74, 100, 110, 148, 185, 220, 275, 370, 407, 503, 550, 740, 814, 925, 1006, 1100, 1628, 1850, 2012, 2035, 2515, 3700, 4070, 5030, 5533, 8140, 10060, 10175, 11066, 12575, 18611, 20350, 22132, 25150, 27665, 37222, 40700, 50300, 55330, 74444, 93055, 110660, 138325, 186110, 204721, 276650, 372220, 409442, 465275, 553300, 818884, 930550, 1023605, 1861100, 2047210, 4094420, 5118025, 10236050, 20472100]

約数ペア:

[(1, 20472100), (2, 10236050), (4, 5118025), (5, 4094420), (10, 2047210), (11, 1861100), (20, 1023605), (22, 930550), (25, 818884), (37, 553300), (44, 465275), (50, 409442), (55, 372220), (74, 276650), (100, 204721), (110, 186110), (148, 138325), (185, 110660), (220, 93055), (275, 74444), (370, 55330), (407, 50300), (503, 40700), (550, 37222), (740, 27665), (814, 25150), (925, 22132), (1006, 20350), (1100, 18611), (1628, 12575), (1850, 11066), (2012, 10175), (2035, 10060), (2515, 8140), (3700, 5533), (4070, 5030)]