18918620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{7949}}^1$

素因数の和:7982

約数の個数: 48

約数和(自身を含む): 48081600

約数和(自身を除く): 29162980

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 340, 476, 595, 1190, 2380, 7949, 15898, 31796, 39745, 55643, 79490, 111286, 135133, 158980, 222572, 270266, 278215, 540532, 556430, 675665, 945931, 1112860, 1351330, 1891862, 2702660, 3783724, 4729655, 9459310, 18918620]

約数ペア:

[(1, 18918620), (2, 9459310), (4, 4729655), (5, 3783724), (7, 2702660), (10, 1891862), (14, 1351330), (17, 1112860), (20, 945931), (28, 675665), (34, 556430), (35, 540532), (68, 278215), (70, 270266), (85, 222572), (119, 158980), (140, 135133), (170, 111286), (238, 79490), (340, 55643), (476, 39745), (595, 31796), (1190, 15898), (2380, 7949)]