19403902

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{613}}^1$

素因数の和:665

約数の個数: 48

約数和(自身を含む): 37797840

約数和(自身を除く): 18393938

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 49, 98, 119, 133, 238, 266, 323, 613, 646, 833, 931, 1226, 1666, 1862, 2261, 4291, 4522, 8582, 10421, 11647, 15827, 20842, 23294, 30037, 31654, 60074, 72947, 81529, 145894, 163058, 197999, 395998, 510629, 570703, 1021258, 1141406, 1385993, 2771986, 9701951, 19403902]

約数ペア:

[(1, 19403902), (2, 9701951), (7, 2771986), (14, 1385993), (17, 1141406), (19, 1021258), (34, 570703), (38, 510629), (49, 395998), (98, 197999), (119, 163058), (133, 145894), (238, 81529), (266, 72947), (323, 60074), (613, 31654), (646, 30037), (833, 23294), (931, 20842), (1226, 15827), (1666, 11647), (1862, 10421), (2261, 8582), (4291, 4522)]