19992748

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1\times {\mathrm{101}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 38864448

約数和(自身を除く): 18871700

約数列:

[1, 2, 4, 17, 34, 41, 68, 71, 82, 101, 142, 164, 202, 284, 404, 697, 1207, 1394, 1717, 2414, 2788, 2911, 3434, 4141, 4828, 5822, 6868, 7171, 8282, 11644, 14342, 16564, 28684, 49487, 70397, 98974, 121907, 140794, 197948, 243814, 281588, 294011, 487628, 588022, 1176044, 4998187, 9996374, 19992748]

約数ペア:

[(1, 19992748), (2, 9996374), (4, 4998187), (17, 1176044), (34, 588022), (41, 487628), (68, 294011), (71, 281588), (82, 243814), (101, 197948), (142, 140794), (164, 121907), (202, 98974), (284, 70397), (404, 49487), (697, 28684), (1207, 16564), (1394, 14342), (1717, 11644), (2414, 8282), (2788, 7171), (2911, 6868), (3434, 5822), (4141, 4828)]