18011775

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:232

約数の個数: 48

約数和(自身を含む): 31490048

約数和(自身を除く): 13478273

約数列:

[1, 3, 5, 15, 25, 31, 61, 75, 93, 127, 155, 183, 305, 381, 465, 635, 775, 915, 1525, 1891, 1905, 2325, 3175, 3937, 4575, 5673, 7747, 9455, 9525, 11811, 19685, 23241, 28365, 38735, 47275, 59055, 98425, 116205, 141825, 193675, 240157, 295275, 581025, 720471, 1200785, 3602355, 6003925, 18011775]

約数ペア:

[(1, 18011775), (3, 6003925), (5, 3602355), (15, 1200785), (25, 720471), (31, 581025), (61, 295275), (75, 240157), (93, 193675), (127, 141825), (155, 116205), (183, 98425), (305, 59055), (381, 47275), (465, 38735), (635, 28365), (775, 23241), (915, 19685), (1525, 11811), (1891, 9525), (1905, 9455), (2325, 7747), (3175, 5673), (3937, 4575)]