28039760

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{311}}^1$

素因数の和:361

約数の個数: 120

約数和(自身を含む): 79387776

約数和(自身を除く): 51348016

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 49, 56, 70, 80, 92, 98, 112, 115, 140, 161, 184, 196, 230, 245, 280, 311, 322, 368, 392, 460, 490, 560, 622, 644, 784, 805, 920, 980, 1127, 1244, 1288, 1555, 1610, 1840, 1960, 2177, 2254, 2488, 2576, 3110, 3220, 3920, 4354, 4508, 4976, 5635, 6220, 6440, 7153, 8708, 9016, 10885, 11270, 12440, 12880, 14306, 15239, 17416, 18032, 21770, 22540, 24880, 28612, 30478, 34832, 35765, 43540, 45080, 50071, 57224, 60956, 71530, 76195, 87080, 90160, 100142, 114448, 121912, 143060, 152390, 174160, 200284, 243824, 250355, 286120, 304780, 350497, 400568, 500710, 572240, 609560, 700994, 801136, 1001420, 1219120, 1401988, 1752485, 2002840, 2803976, 3504970, 4005680, 5607952, 7009940, 14019880, 28039760]

約数ペア:

[(1, 28039760), (2, 14019880), (4, 7009940), (5, 5607952), (7, 4005680), (8, 3504970), (10, 2803976), (14, 2002840), (16, 1752485), (20, 1401988), (23, 1219120), (28, 1001420), (35, 801136), (40, 700994), (46, 609560), (49, 572240), (56, 500710), (70, 400568), (80, 350497), (92, 304780), (98, 286120), (112, 250355), (115, 243824), (140, 200284), (161, 174160), (184, 152390), (196, 143060), (230, 121912), (245, 114448), (280, 100142), (311, 90160), (322, 87080), (368, 76195), (392, 71530), (460, 60956), (490, 57224), (560, 50071), (622, 45080), (644, 43540), (784, 35765), (805, 34832), (920, 30478), (980, 28612), (1127, 24880), (1244, 22540), (1288, 21770), (1555, 18032), (1610, 17416), (1840, 15239), (1960, 14306), (2177, 12880), (2254, 12440), (2488, 11270), (2576, 10885), (3110, 9016), (3220, 8708), (3920, 7153), (4354, 6440), (4508, 6220), (4976, 5635)]