19140940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{809}}^1$

素因数の和:851

約数の個数: 72

約数和(自身を含む): 49805280

約数和(自身を除く): 30664340

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 809, 845, 910, 1183, 1618, 1690, 1820, 2366, 3236, 3380, 4045, 4732, 5663, 5915, 8090, 10517, 11326, 11830, 16180, 21034, 22652, 23660, 28315, 42068, 52585, 56630, 73619, 105170, 113260, 136721, 147238, 210340, 273442, 294476, 368095, 546884, 683605, 736190, 957047, 1367210, 1472380, 1914094, 2734420, 3828188, 4785235, 9570470, 19140940]

約数ペア:

[(1, 19140940), (2, 9570470), (4, 4785235), (5, 3828188), (7, 2734420), (10, 1914094), (13, 1472380), (14, 1367210), (20, 957047), (26, 736190), (28, 683605), (35, 546884), (52, 368095), (65, 294476), (70, 273442), (91, 210340), (130, 147238), (140, 136721), (169, 113260), (182, 105170), (260, 73619), (338, 56630), (364, 52585), (455, 42068), (676, 28315), (809, 23660), (845, 22652), (910, 21034), (1183, 16180), (1618, 11830), (1690, 11326), (1820, 10517), (2366, 8090), (3236, 5915), (3380, 5663), (4045, 4732)]