2806440

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{257}}^1$

素因数の和:291

約数の個数: 128

約数和(自身を含む): 10402560

約数和(自身を除く): 7596120

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 257, 260, 273, 280, 312, 364, 390, 420, 455, 514, 520, 546, 728, 771, 780, 840, 910, 1028, 1092, 1285, 1365, 1542, 1560, 1799, 1820, 2056, 2184, 2570, 2730, 3084, 3341, 3598, 3640, 3855, 5140, 5397, 5460, 6168, 6682, 7196, 7710, 8995, 10023, 10280, 10794, 10920, 13364, 14392, 15420, 16705, 17990, 20046, 21588, 23387, 26728, 26985, 30840, 33410, 35980, 40092, 43176, 46774, 50115, 53970, 66820, 70161, 71960, 80184, 93548, 100230, 107940, 116935, 133640, 140322, 187096, 200460, 215880, 233870, 280644, 350805, 400920, 467740, 561288, 701610, 935480, 1403220, 2806440]

約数ペア:

[(1, 2806440), (2, 1403220), (3, 935480), (4, 701610), (5, 561288), (6, 467740), (7, 400920), (8, 350805), (10, 280644), (12, 233870), (13, 215880), (14, 200460), (15, 187096), (20, 140322), (21, 133640), (24, 116935), (26, 107940), (28, 100230), (30, 93548), (35, 80184), (39, 71960), (40, 70161), (42, 66820), (52, 53970), (56, 50115), (60, 46774), (65, 43176), (70, 40092), (78, 35980), (84, 33410), (91, 30840), (104, 26985), (105, 26728), (120, 23387), (130, 21588), (140, 20046), (156, 17990), (168, 16705), (182, 15420), (195, 14392), (210, 13364), (257, 10920), (260, 10794), (273, 10280), (280, 10023), (312, 8995), (364, 7710), (390, 7196), (420, 6682), (455, 6168), (514, 5460), (520, 5397), (546, 5140), (728, 3855), (771, 3640), (780, 3598), (840, 3341), (910, 3084), (1028, 2730), (1092, 2570), (1285, 2184), (1365, 2056), (1542, 1820), (1560, 1799)]