17981880

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{21407}}^1$

素因数の和:21428

約数の個数: 64

約数和(自身を含む): 61655040

約数和(自身を除く): 43673160

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, 21407, 42814, 64221, 85628, 107035, 128442, 149849, 171256, 214070, 256884, 299698, 321105, 428140, 449547, 513768, 599396, 642210, 749245, 856280, 899094, 1198792, 1284420, 1498490, 1798188, 2247735, 2568840, 2996980, 3596376, 4495470, 5993960, 8990940, 17981880]

約数ペア:

[(1, 17981880), (2, 8990940), (3, 5993960), (4, 4495470), (5, 3596376), (6, 2996980), (7, 2568840), (8, 2247735), (10, 1798188), (12, 1498490), (14, 1284420), (15, 1198792), (20, 899094), (21, 856280), (24, 749245), (28, 642210), (30, 599396), (35, 513768), (40, 449547), (42, 428140), (56, 321105), (60, 299698), (70, 256884), (84, 214070), (105, 171256), (120, 149849), (140, 128442), (168, 107035), (210, 85628), (280, 64221), (420, 42814), (840, 21407)]