21907492065

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{907}}^1\times {\mathrm{2593}}^1$

素因数の和:3540

約数の個数: 80

約数和(自身を含む): 41039653248

約数和(自身を除く): 19132161183

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 81, 115, 135, 207, 345, 405, 621, 907, 1035, 1863, 2593, 2721, 3105, 4535, 7779, 8163, 9315, 12965, 13605, 20861, 23337, 24489, 38895, 40815, 59639, 62583, 70011, 73467, 104305, 116685, 122445, 178917, 187749, 210033, 298195, 312915, 350055, 367335, 536751, 563247, 894585, 938745, 1050165, 1610253, 1689741, 2351851, 2683755, 2816235, 4830759, 7055553, 8051265, 8448705, 11759255, 21166659, 24153795, 35277765, 54092573, 63499977, 105833295, 162277719, 190499931, 270462865, 317499885, 486833157, 811388595, 952499655, 1460499471, 2434165785, 4381498413, 7302497355, 21907492065]

約数ペア:

[(1, 21907492065), (3, 7302497355), (5, 4381498413), (9, 2434165785), (15, 1460499471), (23, 952499655), (27, 811388595), (45, 486833157), (69, 317499885), (81, 270462865), (115, 190499931), (135, 162277719), (207, 105833295), (345, 63499977), (405, 54092573), (621, 35277765), (907, 24153795), (1035, 21166659), (1863, 11759255), (2593, 8448705), (2721, 8051265), (3105, 7055553), (4535, 4830759), (7779, 2816235), (8163, 2683755), (9315, 2351851), (12965, 1689741), (13605, 1610253), (20861, 1050165), (23337, 938745), (24489, 894585), (38895, 563247), (40815, 536751), (59639, 367335), (62583, 350055), (70011, 312915), (73467, 298195), (104305, 210033), (116685, 187749), (122445, 178917)]