215917480

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1\times {\mathrm{137}}^1$

素因数の和:251

約数の個数: 96

約数和(自身を含む): 517988520

約数和(自身を除く): 302071040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 137, 155, 164, 205, 248, 274, 310, 328, 410, 548, 620, 685, 820, 961, 1096, 1240, 1271, 1370, 1640, 1922, 2542, 2740, 3844, 4247, 4805, 5084, 5480, 5617, 6355, 7688, 8494, 9610, 10168, 11234, 12710, 16988, 19220, 21235, 22468, 25420, 28085, 33976, 38440, 39401, 42470, 44936, 50840, 56170, 78802, 84940, 112340, 131657, 157604, 169880, 174127, 197005, 224680, 263314, 315208, 348254, 394010, 526628, 658285, 696508, 788020, 870635, 1053256, 1316570, 1393016, 1576040, 1741270, 2633140, 3482540, 5266280, 5397937, 6965080, 10795874, 21591748, 26989685, 43183496, 53979370, 107958740, 215917480]

約数ペア:

[(1, 215917480), (2, 107958740), (4, 53979370), (5, 43183496), (8, 26989685), (10, 21591748), (20, 10795874), (31, 6965080), (40, 5397937), (41, 5266280), (62, 3482540), (82, 2633140), (124, 1741270), (137, 1576040), (155, 1393016), (164, 1316570), (205, 1053256), (248, 870635), (274, 788020), (310, 696508), (328, 658285), (410, 526628), (548, 394010), (620, 348254), (685, 315208), (820, 263314), (961, 224680), (1096, 197005), (1240, 174127), (1271, 169880), (1370, 157604), (1640, 131657), (1922, 112340), (2542, 84940), (2740, 78802), (3844, 56170), (4247, 50840), (4805, 44936), (5084, 42470), (5480, 39401), (5617, 38440), (6355, 33976), (7688, 28085), (8494, 25420), (9610, 22468), (10168, 21235), (11234, 19220), (12710, 16988)]