20757786

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{107}}^1\times {\mathrm{149}}^1$

素因数の和:299

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 29008614

約数列:

[1, 2, 3, 6, 7, 14, 21, 31, 42, 62, 93, 107, 149, 186, 214, 217, 298, 321, 434, 447, 642, 651, 749, 894, 1043, 1302, 1498, 2086, 2247, 3129, 3317, 4494, 4619, 6258, 6634, 9238, 9951, 13857, 15943, 19902, 23219, 27714, 31886, 32333, 46438, 47829, 64666, 69657, 95658, 96999, 111601, 139314, 193998, 223202, 334803, 494233, 669606, 988466, 1482699, 2965398, 3459631, 6919262, 10378893, 20757786]

約数ペア:

[(1, 20757786), (2, 10378893), (3, 6919262), (6, 3459631), (7, 2965398), (14, 1482699), (21, 988466), (31, 669606), (42, 494233), (62, 334803), (93, 223202), (107, 193998), (149, 139314), (186, 111601), (214, 96999), (217, 95658), (298, 69657), (321, 64666), (434, 47829), (447, 46438), (642, 32333), (651, 31886), (749, 27714), (894, 23219), (1043, 19902), (1302, 15943), (1498, 13857), (2086, 9951), (2247, 9238), (3129, 6634), (3317, 6258), (4494, 4619)]