21164580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{307}}^1\times {\mathrm{383}}^1$

素因数の和:705

約数の個数: 72

約数和(自身を含む): 64576512

約数和(自身を除く): 43411932

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 307, 383, 614, 766, 921, 1149, 1228, 1532, 1535, 1842, 1915, 2298, 2763, 3070, 3447, 3684, 3830, 4596, 4605, 5526, 5745, 6140, 6894, 7660, 9210, 11052, 11490, 13788, 13815, 17235, 18420, 22980, 27630, 34470, 55260, 68940, 117581, 235162, 352743, 470324, 587905, 705486, 1058229, 1175810, 1410972, 1763715, 2116458, 2351620, 3527430, 4232916, 5291145, 7054860, 10582290, 21164580]

約数ペア:

[(1, 21164580), (2, 10582290), (3, 7054860), (4, 5291145), (5, 4232916), (6, 3527430), (9, 2351620), (10, 2116458), (12, 1763715), (15, 1410972), (18, 1175810), (20, 1058229), (30, 705486), (36, 587905), (45, 470324), (60, 352743), (90, 235162), (180, 117581), (307, 68940), (383, 55260), (614, 34470), (766, 27630), (921, 22980), (1149, 18420), (1228, 17235), (1532, 13815), (1535, 13788), (1842, 11490), (1915, 11052), (2298, 9210), (2763, 7660), (3070, 6894), (3447, 6140), (3684, 5745), (3830, 5526), (4596, 4605)]