128516680

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{74719}}^1$

素因数の和:74773

約数の個数: 32

約数和(自身を含む): 295891200

約数和(自身を除く): 167374520

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 74719, 149438, 298876, 373595, 597752, 747190, 1494380, 2988760, 3212917, 6425834, 12851668, 16064585, 25703336, 32129170, 64258340, 128516680]

約数ペア:

[(1, 128516680), (2, 64258340), (4, 32129170), (5, 25703336), (8, 16064585), (10, 12851668), (20, 6425834), (40, 3212917), (43, 2988760), (86, 1494380), (172, 747190), (215, 597752), (344, 373595), (430, 298876), (860, 149438), (1720, 74719)]