20411950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1013}}^1$

素因数の和:1069

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 21835346

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 310, 325, 403, 650, 775, 806, 1013, 1550, 2015, 2026, 4030, 5065, 10075, 10130, 13169, 20150, 25325, 26338, 31403, 50650, 62806, 65845, 131690, 157015, 314030, 329225, 408239, 658450, 785075, 816478, 1570150, 2041195, 4082390, 10205975, 20411950]

約数ペア:

[(1, 20411950), (2, 10205975), (5, 4082390), (10, 2041195), (13, 1570150), (25, 816478), (26, 785075), (31, 658450), (50, 408239), (62, 329225), (65, 314030), (130, 157015), (155, 131690), (310, 65845), (325, 62806), (403, 50650), (650, 31403), (775, 26338), (806, 25325), (1013, 20150), (1550, 13169), (2015, 10130), (2026, 10075), (4030, 5065)]