20171690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1$

素因数の和:132

約数の個数: 128

約数和(自身を含む): 50761728

約数和(自身を除く): 30590038

約数列:

[1, 2, 5, 7, 10, 11, 14, 17, 22, 23, 34, 35, 46, 55, 67, 70, 77, 85, 110, 115, 119, 134, 154, 161, 170, 187, 230, 238, 253, 322, 335, 374, 385, 391, 469, 506, 595, 670, 737, 770, 782, 805, 935, 938, 1139, 1190, 1265, 1309, 1474, 1541, 1610, 1771, 1870, 1955, 2278, 2345, 2530, 2618, 2737, 3082, 3542, 3685, 3910, 4301, 4690, 5159, 5474, 5695, 6545, 7370, 7705, 7973, 8602, 8855, 10318, 10787, 11390, 12529, 13090, 13685, 15410, 15946, 16951, 17710, 21505, 21574, 25058, 25795, 26197, 27370, 30107, 33902, 39865, 43010, 51590, 52394, 53935, 60214, 62645, 79730, 84755, 87703, 107870, 118657, 125290, 130985, 150535, 169510, 175406, 183379, 237314, 261970, 288167, 301070, 366758, 438515, 576334, 593285, 877030, 916895, 1186570, 1440835, 1833790, 2017169, 2881670, 4034338, 10085845, 20171690]

約数ペア:

[(1, 20171690), (2, 10085845), (5, 4034338), (7, 2881670), (10, 2017169), (11, 1833790), (14, 1440835), (17, 1186570), (22, 916895), (23, 877030), (34, 593285), (35, 576334), (46, 438515), (55, 366758), (67, 301070), (70, 288167), (77, 261970), (85, 237314), (110, 183379), (115, 175406), (119, 169510), (134, 150535), (154, 130985), (161, 125290), (170, 118657), (187, 107870), (230, 87703), (238, 84755), (253, 79730), (322, 62645), (335, 60214), (374, 53935), (385, 52394), (391, 51590), (469, 43010), (506, 39865), (595, 33902), (670, 30107), (737, 27370), (770, 26197), (782, 25795), (805, 25058), (935, 21574), (938, 21505), (1139, 17710), (1190, 16951), (1265, 15946), (1309, 15410), (1474, 13685), (1541, 13090), (1610, 12529), (1771, 11390), (1870, 10787), (1955, 10318), (2278, 8855), (2345, 8602), (2530, 7973), (2618, 7705), (2737, 7370), (3082, 6545), (3542, 5695), (3685, 5474), (3910, 5159), (4301, 4690)]