21628760

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1871}}^1$

素因数の和:1916

約数の個数: 48

約数和(自身を含む): 51723360

約数和(自身を除く): 30094600

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1871, 2312, 2890, 3742, 5780, 7484, 9355, 11560, 14968, 18710, 31807, 37420, 63614, 74840, 127228, 159035, 254456, 318070, 540719, 636140, 1081438, 1272280, 2162876, 2703595, 4325752, 5407190, 10814380, 21628760]

約数ペア:

[(1, 21628760), (2, 10814380), (4, 5407190), (5, 4325752), (8, 2703595), (10, 2162876), (17, 1272280), (20, 1081438), (34, 636140), (40, 540719), (68, 318070), (85, 254456), (136, 159035), (170, 127228), (289, 74840), (340, 63614), (578, 37420), (680, 31807), (1156, 18710), (1445, 14968), (1871, 11560), (2312, 9355), (2890, 7484), (3742, 5780)]