20170409405

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{197}}^1\times {\mathrm{271}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 26600555520

約数和(自身を除く): 6430146115

約数列:

[1, 5, 19, 41, 95, 97, 197, 205, 271, 485, 779, 985, 1355, 1843, 3743, 3895, 3977, 5149, 8077, 9215, 11111, 18715, 19109, 19885, 25745, 26287, 40385, 53387, 55555, 75563, 95545, 131435, 153463, 211109, 266935, 363071, 377815, 499453, 767315, 783469, 1014353, 1055545, 1077767, 1815355, 2188867, 2497265, 3917345, 5071765, 5178539, 5388835, 10944335, 14885911, 20477573, 25892695, 41588473, 74429555, 98392241, 102387865, 207942365, 212320099, 491961205, 1061600495, 4034081881, 20170409405]

約数ペア:

[(1, 20170409405), (5, 4034081881), (19, 1061600495), (41, 491961205), (95, 212320099), (97, 207942365), (197, 102387865), (205, 98392241), (271, 74429555), (485, 41588473), (779, 25892695), (985, 20477573), (1355, 14885911), (1843, 10944335), (3743, 5388835), (3895, 5178539), (3977, 5071765), (5149, 3917345), (8077, 2497265), (9215, 2188867), (11111, 1815355), (18715, 1077767), (19109, 1055545), (19885, 1014353), (25745, 783469), (26287, 767315), (40385, 499453), (53387, 377815), (55555, 363071), (75563, 266935), (95545, 211109), (131435, 153463)]