394403420

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{227}}^1\times {\mathrm{797}}^1$

素因数の和:1142

約数の個数: 48

約数和(自身を含む): 840581280

約数和(自身を除く): 446177860

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 227, 436, 454, 545, 797, 908, 1090, 1135, 1594, 2180, 2270, 3188, 3985, 4540, 7970, 15940, 24743, 49486, 86873, 98972, 123715, 173746, 180919, 247430, 347492, 361838, 434365, 494860, 723676, 868730, 904595, 1737460, 1809190, 3618380, 19720171, 39440342, 78880684, 98600855, 197201710, 394403420]

約数ペア:

[(1, 394403420), (2, 197201710), (4, 98600855), (5, 78880684), (10, 39440342), (20, 19720171), (109, 3618380), (218, 1809190), (227, 1737460), (436, 904595), (454, 868730), (545, 723676), (797, 494860), (908, 434365), (1090, 361838), (1135, 347492), (1594, 247430), (2180, 180919), (2270, 173746), (3188, 123715), (3985, 98972), (4540, 86873), (7970, 49486), (15940, 24743)]