201621805

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{241}}^1$

素因数の和:358

約数の個数: 64

約数和(自身を含む): 316141056

約数和(自身を除く): 114519251

約数列:

[1, 5, 7, 11, 35, 41, 53, 55, 77, 205, 241, 265, 287, 371, 385, 451, 583, 1205, 1435, 1687, 1855, 2173, 2255, 2651, 2915, 3157, 4081, 8435, 9881, 10865, 12773, 13255, 15211, 15785, 18557, 20405, 23903, 49405, 63865, 69167, 76055, 89411, 92785, 108691, 119515, 140503, 167321, 345835, 447055, 523693, 543455, 702515, 760837, 836605, 983521, 2618465, 3665851, 3804185, 4917605, 5760623, 18329255, 28803115, 40324361, 201621805]

約数ペア:

[(1, 201621805), (5, 40324361), (7, 28803115), (11, 18329255), (35, 5760623), (41, 4917605), (53, 3804185), (55, 3665851), (77, 2618465), (205, 983521), (241, 836605), (265, 760837), (287, 702515), (371, 543455), (385, 523693), (451, 447055), (583, 345835), (1205, 167321), (1435, 140503), (1687, 119515), (1855, 108691), (2173, 92785), (2255, 89411), (2651, 76055), (2915, 69167), (3157, 63865), (4081, 49405), (8435, 23903), (9881, 20405), (10865, 18557), (12773, 15785), (13255, 15211)]