20524240

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{281}}^1$

素因数の和:388

約数の個数: 80

約数和(自身を含む): 52871616

約数和(自身を除く): 32347376

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 83, 88, 110, 166, 176, 220, 281, 332, 415, 440, 562, 664, 830, 880, 913, 1124, 1328, 1405, 1660, 1826, 2248, 2810, 3091, 3320, 3652, 4496, 4565, 5620, 6182, 6640, 7304, 9130, 11240, 12364, 14608, 15455, 18260, 22480, 23323, 24728, 30910, 36520, 46646, 49456, 61820, 73040, 93292, 116615, 123640, 186584, 233230, 247280, 256553, 373168, 466460, 513106, 932920, 1026212, 1282765, 1865840, 2052424, 2565530, 4104848, 5131060, 10262120, 20524240]

約数ペア:

[(1, 20524240), (2, 10262120), (4, 5131060), (5, 4104848), (8, 2565530), (10, 2052424), (11, 1865840), (16, 1282765), (20, 1026212), (22, 932920), (40, 513106), (44, 466460), (55, 373168), (80, 256553), (83, 247280), (88, 233230), (110, 186584), (166, 123640), (176, 116615), (220, 93292), (281, 73040), (332, 61820), (415, 49456), (440, 46646), (562, 36520), (664, 30910), (830, 24728), (880, 23323), (913, 22480), (1124, 18260), (1328, 15455), (1405, 14608), (1660, 12364), (1826, 11240), (2248, 9130), (2810, 7304), (3091, 6640), (3320, 6182), (3652, 5620), (4496, 4565)]