21148270

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:697

約数の個数: 64

約数和(自身を含む): 46738944

約数和(自身を除く): 25590674

約数列:

[1, 2, 5, 10, 11, 13, 22, 23, 26, 46, 55, 65, 110, 115, 130, 143, 230, 253, 286, 299, 506, 598, 643, 715, 1265, 1286, 1430, 1495, 2530, 2990, 3215, 3289, 6430, 6578, 7073, 8359, 14146, 14789, 16445, 16718, 29578, 32890, 35365, 41795, 70730, 73945, 83590, 91949, 147890, 162679, 183898, 192257, 325358, 384514, 459745, 813395, 919490, 961285, 1626790, 1922570, 2114827, 4229654, 10574135, 21148270]

約数ペア:

[(1, 21148270), (2, 10574135), (5, 4229654), (10, 2114827), (11, 1922570), (13, 1626790), (22, 961285), (23, 919490), (26, 813395), (46, 459745), (55, 384514), (65, 325358), (110, 192257), (115, 183898), (130, 162679), (143, 147890), (230, 91949), (253, 83590), (286, 73945), (299, 70730), (506, 41795), (598, 35365), (643, 32890), (715, 29578), (1265, 16718), (1286, 16445), (1430, 14789), (1495, 14146), (2530, 8359), (2990, 7073), (3215, 6578), (3289, 6430)]