4005680

素因数分解:

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

素因数の和:354

約数の個数: 80

約数和(自身を含む): 11142144

約数和(自身を除く): 7136464

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 311, 322, 368, 460, 560, 622, 644, 805, 920, 1244, 1288, 1555, 1610, 1840, 2177, 2488, 2576, 3110, 3220, 4354, 4976, 6220, 6440, 7153, 8708, 10885, 12440, 12880, 14306, 17416, 21770, 24880, 28612, 34832, 35765, 43540, 50071, 57224, 71530, 87080, 100142, 114448, 143060, 174160, 200284, 250355, 286120, 400568, 500710, 572240, 801136, 1001420, 2002840, 4005680]

約数ペア:

[(1, 4005680), (2, 2002840), (4, 1001420), (5, 801136), (7, 572240), (8, 500710), (10, 400568), (14, 286120), (16, 250355), (20, 200284), (23, 174160), (28, 143060), (35, 114448), (40, 100142), (46, 87080), (56, 71530), (70, 57224), (80, 50071), (92, 43540), (112, 35765), (115, 34832), (140, 28612), (161, 24880), (184, 21770), (230, 17416), (280, 14306), (311, 12880), (322, 12440), (368, 10885), (460, 8708), (560, 7153), (622, 6440), (644, 6220), (805, 4976), (920, 4354), (1244, 3220), (1288, 3110), (1555, 2576), (1610, 2488), (1840, 2177)]