320424820

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^2\times {\mathrm{83}}^1$

素因数の和:269

約数の個数: 72

約数和(自身を含む): 707392224

約数和(自身を除く): 386967404

約数列:

[1, 2, 4, 5, 10, 20, 43, 67, 83, 86, 134, 166, 172, 215, 268, 332, 335, 415, 430, 670, 830, 860, 1340, 1660, 2881, 3569, 4489, 5561, 5762, 7138, 8978, 11122, 11524, 14276, 14405, 17845, 17956, 22244, 22445, 27805, 28810, 35690, 44890, 55610, 57620, 71380, 89780, 111220, 193027, 239123, 372587, 386054, 478246, 745174, 772108, 956492, 965135, 1195615, 1490348, 1862935, 1930270, 2391230, 3725870, 3860540, 4782460, 7451740, 16021241, 32042482, 64084964, 80106205, 160212410, 320424820]

約数ペア:

[(1, 320424820), (2, 160212410), (4, 80106205), (5, 64084964), (10, 32042482), (20, 16021241), (43, 7451740), (67, 4782460), (83, 3860540), (86, 3725870), (134, 2391230), (166, 1930270), (172, 1862935), (215, 1490348), (268, 1195615), (332, 965135), (335, 956492), (415, 772108), (430, 745174), (670, 478246), (830, 386054), (860, 372587), (1340, 239123), (1660, 193027), (2881, 111220), (3569, 89780), (4489, 71380), (5561, 57620), (5762, 55610), (7138, 44890), (8978, 35690), (11122, 28810), (11524, 27805), (14276, 22445), (14405, 22244), (17845, 17956)]