205615540

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{127}}^1\times {\mathrm{479}}^1$

素因数の和:641

約数の個数: 72

約数和(自身を含む): 472227840

約数和(自身を除く): 266612300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 127, 130, 169, 254, 260, 338, 479, 508, 635, 676, 845, 958, 1270, 1651, 1690, 1916, 2395, 2540, 3302, 3380, 4790, 6227, 6604, 8255, 9580, 12454, 16510, 21463, 24908, 31135, 33020, 42926, 60833, 62270, 80951, 85852, 107315, 121666, 124540, 161902, 214630, 243332, 304165, 323804, 404755, 429260, 608330, 790829, 809510, 1216660, 1581658, 1619020, 3163316, 3954145, 7908290, 10280777, 15816580, 20561554, 41123108, 51403885, 102807770, 205615540]

約数ペア:

[(1, 205615540), (2, 102807770), (4, 51403885), (5, 41123108), (10, 20561554), (13, 15816580), (20, 10280777), (26, 7908290), (52, 3954145), (65, 3163316), (127, 1619020), (130, 1581658), (169, 1216660), (254, 809510), (260, 790829), (338, 608330), (479, 429260), (508, 404755), (635, 323804), (676, 304165), (845, 243332), (958, 214630), (1270, 161902), (1651, 124540), (1690, 121666), (1916, 107315), (2395, 85852), (2540, 80951), (3302, 62270), (3380, 60833), (4790, 42926), (6227, 33020), (6604, 31135), (8255, 24908), (9580, 21463), (12454, 16510)]