21305650

素因数分解:

$2^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{547}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 42809760

約数和(自身を除く): 21504110

約数列:

[1, 2, 5, 10, 19, 25, 38, 41, 50, 82, 95, 190, 205, 410, 475, 547, 779, 950, 1025, 1094, 1558, 2050, 2735, 3895, 5470, 7790, 10393, 13675, 19475, 20786, 22427, 27350, 38950, 44854, 51965, 103930, 112135, 224270, 259825, 426113, 519650, 560675, 852226, 1121350, 2130565, 4261130, 10652825, 21305650]

約数ペア:

[(1, 21305650), (2, 10652825), (5, 4261130), (10, 2130565), (19, 1121350), (25, 852226), (38, 560675), (41, 519650), (50, 426113), (82, 259825), (95, 224270), (190, 112135), (205, 103930), (410, 51965), (475, 44854), (547, 38950), (779, 27350), (950, 22427), (1025, 20786), (1094, 19475), (1558, 13675), (2050, 10393), (2735, 7790), (3895, 5470)]