81991525

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{191}}^1\times {\mathrm{223}}^1$

素因数の和:442

約数の個数: 48

約数和(自身を含む): 127991808

約数和(自身を除く): 46000283

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 175, 191, 223, 275, 385, 955, 1115, 1337, 1561, 1925, 2101, 2453, 4775, 5575, 6685, 7805, 10505, 12265, 14707, 17171, 33425, 39025, 42593, 52525, 61325, 73535, 85855, 212965, 298151, 367675, 429275, 468523, 1064825, 1490755, 2342615, 3279661, 7453775, 11713075, 16398305, 81991525]

約数ペア:

[(1, 81991525), (5, 16398305), (7, 11713075), (11, 7453775), (25, 3279661), (35, 2342615), (55, 1490755), (77, 1064825), (175, 468523), (191, 429275), (223, 367675), (275, 298151), (385, 212965), (955, 85855), (1115, 73535), (1337, 61325), (1561, 52525), (1925, 42593), (2101, 39025), (2453, 33425), (4775, 17171), (5575, 14707), (6685, 12265), (7805, 10505)]