21265538

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{449}}^1$

素因数の和:674

約数の個数: 32

約数和(自身を含む): 38880000

約数和(自身を除く): 17614462

約数列:

[1, 2, 7, 14, 17, 34, 119, 199, 238, 398, 449, 898, 1393, 2786, 3143, 3383, 6286, 6766, 7633, 15266, 23681, 47362, 53431, 89351, 106862, 178702, 625457, 1250914, 1518967, 3037934, 10632769, 21265538]

約数ペア:

[(1, 21265538), (2, 10632769), (7, 3037934), (14, 1518967), (17, 1250914), (34, 625457), (119, 178702), (199, 106862), (238, 89351), (398, 53431), (449, 47362), (898, 23681), (1393, 15266), (2786, 7633), (3143, 6766), (3383, 6286)]