12900620

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1997}}^1$

素因数の和:2042

約数の個数: 48

約数和(自身を含む): 30209760

約数和(自身を除く): 17309140

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 1997, 3230, 3994, 6460, 7988, 9985, 19970, 33949, 37943, 39940, 67898, 75886, 135796, 151772, 169745, 189715, 339490, 379430, 645031, 678980, 758860, 1290062, 2580124, 3225155, 6450310, 12900620]

約数ペア:

[(1, 12900620), (2, 6450310), (4, 3225155), (5, 2580124), (10, 1290062), (17, 758860), (19, 678980), (20, 645031), (34, 379430), (38, 339490), (68, 189715), (76, 169745), (85, 151772), (95, 135796), (170, 75886), (190, 67898), (323, 39940), (340, 37943), (380, 33949), (646, 19970), (1292, 9985), (1615, 7988), (1997, 6460), (3230, 3994)]