19943890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{103}}^1$

素因数の和:211

約数の個数: 48

約数和(自身を含む): 39079872

約数和(自身を除く): 19135982

約数列:

[1, 2, 5, 10, 17, 34, 67, 85, 103, 134, 170, 206, 289, 335, 515, 578, 670, 1030, 1139, 1445, 1751, 2278, 2890, 3502, 5695, 6901, 8755, 11390, 13802, 17510, 19363, 29767, 34505, 38726, 59534, 69010, 96815, 117317, 148835, 193630, 234634, 297670, 586585, 1173170, 1994389, 3988778, 9971945, 19943890]

約数ペア:

[(1, 19943890), (2, 9971945), (5, 3988778), (10, 1994389), (17, 1173170), (34, 586585), (67, 297670), (85, 234634), (103, 193630), (134, 148835), (170, 117317), (206, 96815), (289, 69010), (335, 59534), (515, 38726), (578, 34505), (670, 29767), (1030, 19363), (1139, 17510), (1445, 13802), (1751, 11390), (2278, 8755), (2890, 6901), (3502, 5695)]