19581770

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:207

約数の個数: 64

約数和(自身を含む): 40449024

約数和(自身を除く): 20867254

約数列:

[1, 2, 5, 10, 13, 26, 31, 43, 62, 65, 86, 113, 130, 155, 215, 226, 310, 403, 430, 559, 565, 806, 1118, 1130, 1333, 1469, 2015, 2666, 2795, 2938, 3503, 4030, 4859, 5590, 6665, 7006, 7345, 9718, 13330, 14690, 17329, 17515, 24295, 34658, 35030, 45539, 48590, 63167, 86645, 91078, 126334, 150629, 173290, 227695, 301258, 315835, 455390, 631670, 753145, 1506290, 1958177, 3916354, 9790885, 19581770]

約数ペア:

[(1, 19581770), (2, 9790885), (5, 3916354), (10, 1958177), (13, 1506290), (26, 753145), (31, 631670), (43, 455390), (62, 315835), (65, 301258), (86, 227695), (113, 173290), (130, 150629), (155, 126334), (215, 91078), (226, 86645), (310, 63167), (403, 48590), (430, 45539), (559, 35030), (565, 34658), (806, 24295), (1118, 17515), (1130, 17329), (1333, 14690), (1469, 13330), (2015, 9718), (2666, 7345), (2795, 7006), (2938, 6665), (3503, 5590), (4030, 4859)]