21683655

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3623}}^1$

素因数の和:3660

約数の個数: 48

約数和(自身を含む): 45227520

約数和(自身を除く): 23543865

約数列:

[1, 3, 5, 7, 9, 15, 19, 21, 35, 45, 57, 63, 95, 105, 133, 171, 285, 315, 399, 665, 855, 1197, 1995, 3623, 5985, 10869, 18115, 25361, 32607, 54345, 68837, 76083, 126805, 163035, 206511, 228249, 344185, 380415, 481859, 619533, 1032555, 1141245, 1445577, 2409295, 3097665, 4336731, 7227885, 21683655]

約数ペア:

[(1, 21683655), (3, 7227885), (5, 4336731), (7, 3097665), (9, 2409295), (15, 1445577), (19, 1141245), (21, 1032555), (35, 619533), (45, 481859), (57, 380415), (63, 344185), (95, 228249), (105, 206511), (133, 163035), (171, 126805), (285, 76083), (315, 68837), (399, 54345), (665, 32607), (855, 25361), (1197, 18115), (1995, 10869), (3623, 5985)]