21970690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{137}}^1$

素因数の和:259

約数の個数: 64

約数和(自身を含む): 47692800

約数和(自身を除く): 25722110

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 70, 79, 137, 145, 158, 203, 274, 290, 395, 406, 553, 685, 790, 959, 1015, 1106, 1370, 1918, 2030, 2291, 2765, 3973, 4582, 4795, 5530, 7946, 9590, 10823, 11455, 16037, 19865, 21646, 22910, 27811, 32074, 39730, 54115, 55622, 75761, 80185, 108230, 139055, 151522, 160370, 278110, 313867, 378805, 627734, 757610, 1569335, 2197069, 3138670, 4394138, 10985345, 21970690]

約数ペア:

[(1, 21970690), (2, 10985345), (5, 4394138), (7, 3138670), (10, 2197069), (14, 1569335), (29, 757610), (35, 627734), (58, 378805), (70, 313867), (79, 278110), (137, 160370), (145, 151522), (158, 139055), (203, 108230), (274, 80185), (290, 75761), (395, 55622), (406, 54115), (553, 39730), (685, 32074), (790, 27811), (959, 22910), (1015, 21646), (1106, 19865), (1370, 16037), (1918, 11455), (2030, 10823), (2291, 9590), (2765, 7946), (3973, 5530), (4582, 4795)]