21375130

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:223

約数の個数: 64

約数和(自身を含む): 46033920

約数和(自身を除く): 24658790

約数列:

[1, 2, 5, 7, 10, 14, 35, 47, 70, 73, 89, 94, 146, 178, 235, 329, 365, 445, 470, 511, 623, 658, 730, 890, 1022, 1246, 1645, 2555, 3115, 3290, 3431, 4183, 5110, 6230, 6497, 6862, 8366, 12994, 17155, 20915, 24017, 29281, 32485, 34310, 41830, 45479, 48034, 58562, 64970, 90958, 120085, 146405, 227395, 240170, 292810, 305359, 454790, 610718, 1526795, 2137513, 3053590, 4275026, 10687565, 21375130]

約数ペア:

[(1, 21375130), (2, 10687565), (5, 4275026), (7, 3053590), (10, 2137513), (14, 1526795), (35, 610718), (47, 454790), (70, 305359), (73, 292810), (89, 240170), (94, 227395), (146, 146405), (178, 120085), (235, 90958), (329, 64970), (365, 58562), (445, 48034), (470, 45479), (511, 41830), (623, 34310), (658, 32485), (730, 29281), (890, 24017), (1022, 20915), (1246, 17155), (1645, 12994), (2555, 8366), (3115, 6862), (3290, 6497), (3431, 6230), (4183, 5110)]