168279940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{6971}}^1$

素因数の和:7068

約数の個数: 48

約数和(自身を含む): 379499904

約数和(自身を除く): 211219964

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 71, 85, 142, 170, 284, 340, 355, 710, 1207, 1420, 2414, 4828, 6035, 6971, 12070, 13942, 24140, 27884, 34855, 69710, 118507, 139420, 237014, 474028, 494941, 592535, 989882, 1185070, 1979764, 2370140, 2474705, 4949410, 8413997, 9898820, 16827994, 33655988, 42069985, 84139970, 168279940]

約数ペア:

[(1, 168279940), (2, 84139970), (4, 42069985), (5, 33655988), (10, 16827994), (17, 9898820), (20, 8413997), (34, 4949410), (68, 2474705), (71, 2370140), (85, 1979764), (142, 1185070), (170, 989882), (284, 592535), (340, 494941), (355, 474028), (710, 237014), (1207, 139420), (1420, 118507), (2414, 69710), (4828, 34855), (6035, 27884), (6971, 24140), (12070, 13942)]