31870020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{449}}^1$

素因数の和:494

約数の個数: 144

約数和(自身を含む): 110678400

約数和(自身を除く): 78808380

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 13, 14, 15, 20, 21, 26, 28, 30, 35, 39, 42, 52, 60, 65, 70, 78, 84, 91, 105, 130, 140, 156, 169, 182, 195, 210, 260, 273, 338, 364, 390, 420, 449, 455, 507, 546, 676, 780, 845, 898, 910, 1014, 1092, 1183, 1347, 1365, 1690, 1796, 1820, 2028, 2245, 2366, 2535, 2694, 2730, 3143, 3380, 3549, 4490, 4732, 5070, 5388, 5460, 5837, 5915, 6286, 6735, 7098, 8980, 9429, 10140, 11674, 11830, 12572, 13470, 14196, 15715, 17511, 17745, 18858, 23348, 23660, 26940, 29185, 31430, 35022, 35490, 37716, 40859, 47145, 58370, 62860, 70044, 70980, 75881, 81718, 87555, 94290, 116740, 122577, 151762, 163436, 175110, 188580, 204295, 227643, 245154, 303524, 350220, 379405, 408590, 455286, 490308, 531167, 612885, 758810, 817180, 910572, 1062334, 1138215, 1225770, 1517620, 1593501, 2124668, 2276430, 2451540, 2655835, 3187002, 4552860, 5311670, 6374004, 7967505, 10623340, 15935010, 31870020]

約数ペア:

[(1, 31870020), (2, 15935010), (3, 10623340), (4, 7967505), (5, 6374004), (6, 5311670), (7, 4552860), (10, 3187002), (12, 2655835), (13, 2451540), (14, 2276430), (15, 2124668), (20, 1593501), (21, 1517620), (26, 1225770), (28, 1138215), (30, 1062334), (35, 910572), (39, 817180), (42, 758810), (52, 612885), (60, 531167), (65, 490308), (70, 455286), (78, 408590), (84, 379405), (91, 350220), (105, 303524), (130, 245154), (140, 227643), (156, 204295), (169, 188580), (182, 175110), (195, 163436), (210, 151762), (260, 122577), (273, 116740), (338, 94290), (364, 87555), (390, 81718), (420, 75881), (449, 70980), (455, 70044), (507, 62860), (546, 58370), (676, 47145), (780, 40859), (845, 37716), (898, 35490), (910, 35022), (1014, 31430), (1092, 29185), (1183, 26940), (1347, 23660), (1365, 23348), (1690, 18858), (1796, 17745), (1820, 17511), (2028, 15715), (2245, 14196), (2366, 13470), (2535, 12572), (2694, 11830), (2730, 11674), (3143, 10140), (3380, 9429), (3549, 8980), (4490, 7098), (4732, 6735), (5070, 6286), (5388, 5915), (5460, 5837)]