320410480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{1823}}^1$

素因数の和:1875

約数の個数: 80

約数和(自身を含む): 807448320

約数和(自身を除く): 487037840

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1690, 1823, 2197, 2704, 3380, 3646, 4394, 6760, 7292, 8788, 9115, 10985, 13520, 14584, 17576, 18230, 21970, 23699, 29168, 35152, 36460, 43940, 47398, 72920, 87880, 94796, 118495, 145840, 175760, 189592, 236990, 308087, 379184, 473980, 616174, 947960, 1232348, 1540435, 1895920, 2464696, 3080870, 4005131, 4929392, 6161740, 8010262, 12323480, 16020524, 20025655, 24646960, 32041048, 40051310, 64082096, 80102620, 160205240, 320410480]

約数ペア:

[(1, 320410480), (2, 160205240), (4, 80102620), (5, 64082096), (8, 40051310), (10, 32041048), (13, 24646960), (16, 20025655), (20, 16020524), (26, 12323480), (40, 8010262), (52, 6161740), (65, 4929392), (80, 4005131), (104, 3080870), (130, 2464696), (169, 1895920), (208, 1540435), (260, 1232348), (338, 947960), (520, 616174), (676, 473980), (845, 379184), (1040, 308087), (1352, 236990), (1690, 189592), (1823, 175760), (2197, 145840), (2704, 118495), (3380, 94796), (3646, 87880), (4394, 72920), (6760, 47398), (7292, 43940), (8788, 36460), (9115, 35152), (10985, 29168), (13520, 23699), (14584, 21970), (17576, 18230)]