21288148

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{6389}}^1$

素因数の和:6424

約数の個数: 36

約数和(自身を含む): 45892980

約数和(自身を除く): 24604832

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 68, 98, 119, 196, 238, 476, 833, 1666, 3332, 6389, 12778, 25556, 44723, 89446, 108613, 178892, 217226, 313061, 434452, 626122, 760291, 1252244, 1520582, 3041164, 5322037, 10644074, 21288148]

約数ペア:

[(1, 21288148), (2, 10644074), (4, 5322037), (7, 3041164), (14, 1520582), (17, 1252244), (28, 760291), (34, 626122), (49, 434452), (68, 313061), (98, 217226), (119, 178892), (196, 108613), (238, 89446), (476, 44723), (833, 25556), (1666, 12778), (3332, 6389)]