18686804912

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{917459}}^1$

素因数の和:917553

約数の個数: 40

約数和(自身を含む): 38680113600

約数和(自身を除く): 19993308688

約数列:

[1, 2, 4, 8, 16, 19, 38, 67, 76, 134, 152, 268, 304, 536, 1072, 1273, 2546, 5092, 10184, 20368, 917459, 1834918, 3669836, 7339672, 14679344, 17431721, 34863442, 61469753, 69726884, 122939506, 139453768, 245879012, 278907536, 491758024, 983516048, 1167925307, 2335850614, 4671701228, 9343402456, 18686804912]

約数ペア:

[(1, 18686804912), (2, 9343402456), (4, 4671701228), (8, 2335850614), (16, 1167925307), (19, 983516048), (38, 491758024), (67, 278907536), (76, 245879012), (134, 139453768), (152, 122939506), (268, 69726884), (304, 61469753), (536, 34863442), (1072, 17431721), (1273, 14679344), (2546, 7339672), (5092, 3669836), (10184, 1834918), (20368, 917459)]