19779375

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{137}}^1$

素因数の和:178

約数の個数: 80

約数和(自身を含む): 41386752

約数和(自身を除く): 21607377

約数列:

[1, 3, 5, 7, 11, 15, 21, 25, 33, 35, 55, 75, 77, 105, 125, 137, 165, 175, 231, 275, 375, 385, 411, 525, 625, 685, 825, 875, 959, 1155, 1375, 1507, 1875, 1925, 2055, 2625, 2877, 3425, 4125, 4375, 4521, 4795, 5775, 6875, 7535, 9625, 10275, 10549, 13125, 14385, 17125, 20625, 22605, 23975, 28875, 31647, 37675, 48125, 51375, 52745, 71925, 85625, 113025, 119875, 144375, 158235, 188375, 256875, 263725, 359625, 565125, 599375, 791175, 941875, 1318625, 1798125, 2825625, 3955875, 6593125, 19779375]

約数ペア:

[(1, 19779375), (3, 6593125), (5, 3955875), (7, 2825625), (11, 1798125), (15, 1318625), (21, 941875), (25, 791175), (33, 599375), (35, 565125), (55, 359625), (75, 263725), (77, 256875), (105, 188375), (125, 158235), (137, 144375), (165, 119875), (175, 113025), (231, 85625), (275, 71925), (375, 52745), (385, 51375), (411, 48125), (525, 37675), (625, 31647), (685, 28875), (825, 23975), (875, 22605), (959, 20625), (1155, 17125), (1375, 14385), (1507, 13125), (1875, 10549), (1925, 10275), (2055, 9625), (2625, 7535), (2877, 6875), (3425, 5775), (4125, 4795), (4375, 4521)]