31389280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{15091}}^1$

素因数の和:15119

約数の個数: 48

約数和(自身を含む): 79866864

約数和(自身を除く): 48477584

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 15091, 30182, 60364, 75455, 120728, 150910, 196183, 241456, 301820, 392366, 482912, 603640, 784732, 980915, 1207280, 1569464, 1961830, 2414560, 3138928, 3923660, 6277856, 7847320, 15694640, 31389280]

約数ペア:

[(1, 31389280), (2, 15694640), (4, 7847320), (5, 6277856), (8, 3923660), (10, 3138928), (13, 2414560), (16, 1961830), (20, 1569464), (26, 1207280), (32, 980915), (40, 784732), (52, 603640), (65, 482912), (80, 392366), (104, 301820), (130, 241456), (160, 196183), (208, 150910), (260, 120728), (416, 75455), (520, 60364), (1040, 30182), (2080, 15091)]