399670516

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{269}}^1\times {\mathrm{1129}}^1$

素因数の和:1456

約数の個数: 48

約数和(自身を含む): 820108800

約数和(自身を除く): 420438284

約数列:

[1, 2, 4, 7, 14, 28, 47, 94, 188, 269, 329, 538, 658, 1076, 1129, 1316, 1883, 2258, 3766, 4516, 7532, 7903, 12643, 15806, 25286, 31612, 50572, 53063, 88501, 106126, 177002, 212252, 303701, 354004, 371441, 607402, 742882, 1214804, 1485764, 2125907, 4251814, 8503628, 14273947, 28547894, 57095788, 99917629, 199835258, 399670516]

約数ペア:

[(1, 399670516), (2, 199835258), (4, 99917629), (7, 57095788), (14, 28547894), (28, 14273947), (47, 8503628), (94, 4251814), (188, 2125907), (269, 1485764), (329, 1214804), (538, 742882), (658, 607402), (1076, 371441), (1129, 354004), (1316, 303701), (1883, 212252), (2258, 177002), (3766, 106126), (4516, 88501), (7532, 53063), (7903, 50572), (12643, 31612), (15806, 25286)]