21450872

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{3847}}^1$

素因数の和:3911

約数の個数: 32

約数和(自身を含む): 43636320

約数和(自身を除く): 22185448

約数列:

[1, 2, 4, 8, 17, 34, 41, 68, 82, 136, 164, 328, 697, 1394, 2788, 3847, 5576, 7694, 15388, 30776, 65399, 130798, 157727, 261596, 315454, 523192, 630908, 1261816, 2681359, 5362718, 10725436, 21450872]

約数ペア:

[(1, 21450872), (2, 10725436), (4, 5362718), (8, 2681359), (17, 1261816), (34, 630908), (41, 523192), (68, 315454), (82, 261596), (136, 157727), (164, 130798), (328, 65399), (697, 30776), (1394, 15388), (2788, 7694), (3847, 5576)]