401030920

素因数分解:

$2^3\times 5^1\times {\mathrm{509}}^1\times {\mathrm{19697}}^1$

素因数の和:20217

約数の個数: 32

約数和(自身を含む): 904138200

約数和(自身を除く): 503107280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 509, 1018, 2036, 2545, 4072, 5090, 10180, 19697, 20360, 39394, 78788, 98485, 157576, 196970, 393940, 787880, 10025773, 20051546, 40103092, 50128865, 80206184, 100257730, 200515460, 401030920]

約数ペア:

[(1, 401030920), (2, 200515460), (4, 100257730), (5, 80206184), (8, 50128865), (10, 40103092), (20, 20051546), (40, 10025773), (509, 787880), (1018, 393940), (2036, 196970), (2545, 157576), (4072, 98485), (5090, 78788), (10180, 39394), (19697, 20360)]