279039280

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{20639}}^1$

素因数の和:20678

約数の個数: 60

約数和(自身を含む): 702544320

約数和(自身を除く): 423505040

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, 2704, 3380, 6760, 13520, 20639, 41278, 82556, 103195, 165112, 206390, 268307, 330224, 412780, 536614, 825560, 1073228, 1341535, 1651120, 2146456, 2683070, 3487991, 4292912, 5366140, 6975982, 10732280, 13951964, 17439955, 21464560, 27903928, 34879910, 55807856, 69759820, 139519640, 279039280]

約数ペア:

[(1, 279039280), (2, 139519640), (4, 69759820), (5, 55807856), (8, 34879910), (10, 27903928), (13, 21464560), (16, 17439955), (20, 13951964), (26, 10732280), (40, 6975982), (52, 5366140), (65, 4292912), (80, 3487991), (104, 2683070), (130, 2146456), (169, 1651120), (208, 1341535), (260, 1073228), (338, 825560), (520, 536614), (676, 412780), (845, 330224), (1040, 268307), (1352, 206390), (1690, 165112), (2704, 103195), (3380, 82556), (6760, 41278), (13520, 20639)]