989740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:138

約数の個数: 48

約数和(自身を含む): 2286144

約数和(自身を除く): 1296404

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 71, 82, 85, 142, 164, 170, 205, 284, 340, 355, 410, 697, 710, 820, 1207, 1394, 1420, 2414, 2788, 2911, 3485, 4828, 5822, 6035, 6970, 11644, 12070, 13940, 14555, 24140, 29110, 49487, 58220, 98974, 197948, 247435, 494870, 989740]

約数ペア:

[(1, 989740), (2, 494870), (4, 247435), (5, 197948), (10, 98974), (17, 58220), (20, 49487), (34, 29110), (41, 24140), (68, 14555), (71, 13940), (82, 12070), (85, 11644), (142, 6970), (164, 6035), (170, 5822), (205, 4828), (284, 3485), (340, 2911), (355, 2788), (410, 2414), (697, 1420), (710, 1394), (820, 1207)]