20748195

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1223}}^1$

素因数の和:1276

約数の個数: 48

約数和(自身を含む): 40098240

約数和(自身を除く): 19350045

約数列:

[1, 3, 5, 9, 13, 15, 29, 39, 45, 65, 87, 117, 145, 195, 261, 377, 435, 585, 1131, 1223, 1305, 1885, 3393, 3669, 5655, 6115, 11007, 15899, 16965, 18345, 35467, 47697, 55035, 79495, 106401, 143091, 177335, 238485, 319203, 461071, 532005, 715455, 1383213, 1596015, 2305355, 4149639, 6916065, 20748195]

約数ペア:

[(1, 20748195), (3, 6916065), (5, 4149639), (9, 2305355), (13, 1596015), (15, 1383213), (29, 715455), (39, 532005), (45, 461071), (65, 319203), (87, 238485), (117, 177335), (145, 143091), (195, 106401), (261, 79495), (377, 55035), (435, 47697), (585, 35467), (1131, 18345), (1223, 16965), (1305, 15899), (1885, 11007), (3393, 6115), (3669, 5655)]