17890580

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1\times {\mathrm{293}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 39118464

約数和(自身を除く): 21227884

約数列:

[1, 2, 4, 5, 10, 20, 43, 71, 86, 142, 172, 215, 284, 293, 355, 430, 586, 710, 860, 1172, 1420, 1465, 2930, 3053, 5860, 6106, 12212, 12599, 15265, 20803, 25198, 30530, 41606, 50396, 61060, 62995, 83212, 104015, 125990, 208030, 251980, 416060, 894529, 1789058, 3578116, 4472645, 8945290, 17890580]

約数ペア:

[(1, 17890580), (2, 8945290), (4, 4472645), (5, 3578116), (10, 1789058), (20, 894529), (43, 416060), (71, 251980), (86, 208030), (142, 125990), (172, 104015), (215, 83212), (284, 62995), (293, 61060), (355, 50396), (430, 41606), (586, 30530), (710, 25198), (860, 20803), (1172, 15265), (1420, 12599), (1465, 12212), (2930, 6106), (3053, 5860)]