12555020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{251}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 27560736

約数和(自身を除く): 15005716

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 251, 305, 410, 502, 610, 820, 1004, 1220, 1255, 2501, 2510, 5002, 5020, 10004, 10291, 12505, 15311, 20582, 25010, 30622, 41164, 50020, 51455, 61244, 76555, 102910, 153110, 205820, 306220, 627751, 1255502, 2511004, 3138755, 6277510, 12555020]

約数ペア:

[(1, 12555020), (2, 6277510), (4, 3138755), (5, 2511004), (10, 1255502), (20, 627751), (41, 306220), (61, 205820), (82, 153110), (122, 102910), (164, 76555), (205, 61244), (244, 51455), (251, 50020), (305, 41164), (410, 30622), (502, 25010), (610, 20582), (820, 15311), (1004, 12505), (1220, 10291), (1255, 10004), (2501, 5020), (2510, 5002)]