19277780

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{523}}^1$

素因数の和:648

約数の個数: 48

約数和(自身を含む): 43135680

約数和(自身を除く): 23857900

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 380, 388, 485, 523, 970, 1046, 1843, 1940, 2092, 2615, 3686, 5230, 7372, 9215, 9937, 10460, 18430, 19874, 36860, 39748, 49685, 50731, 99370, 101462, 198740, 202924, 253655, 507310, 963889, 1014620, 1927778, 3855556, 4819445, 9638890, 19277780]

約数ペア:

[(1, 19277780), (2, 9638890), (4, 4819445), (5, 3855556), (10, 1927778), (19, 1014620), (20, 963889), (38, 507310), (76, 253655), (95, 202924), (97, 198740), (190, 101462), (194, 99370), (380, 50731), (388, 49685), (485, 39748), (523, 36860), (970, 19874), (1046, 18430), (1843, 10460), (1940, 9937), (2092, 9215), (2615, 7372), (3686, 5230)]