21713160

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25849}}^1$

素因数の和:25870

約数の個数: 64

約数和(自身を含む): 74448000

約数和(自身を除く): 52734840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25849, 51698, 77547, 103396, 129245, 155094, 180943, 206792, 258490, 310188, 361886, 387735, 516980, 542829, 620376, 723772, 775470, 904715, 1033960, 1085658, 1447544, 1550940, 1809430, 2171316, 2714145, 3101880, 3618860, 4342632, 5428290, 7237720, 10856580, 21713160]

約数ペア:

[(1, 21713160), (2, 10856580), (3, 7237720), (4, 5428290), (5, 4342632), (6, 3618860), (7, 3101880), (8, 2714145), (10, 2171316), (12, 1809430), (14, 1550940), (15, 1447544), (20, 1085658), (21, 1033960), (24, 904715), (28, 775470), (30, 723772), (35, 620376), (40, 542829), (42, 516980), (56, 387735), (60, 361886), (70, 310188), (84, 258490), (105, 206792), (120, 180943), (140, 155094), (168, 129245), (210, 103396), (280, 77547), (420, 51698), (840, 25849)]