20755640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{233}}^1$

素因数の和:392

約数の個数: 64

約数和(自身を含む): 50038560

約数和(自身を除く): 29282920

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 131, 136, 170, 233, 262, 340, 466, 524, 655, 680, 932, 1048, 1165, 1310, 1864, 2227, 2330, 2620, 3961, 4454, 4660, 5240, 7922, 8908, 9320, 11135, 15844, 17816, 19805, 22270, 30523, 31688, 39610, 44540, 61046, 79220, 89080, 122092, 152615, 158440, 244184, 305230, 518891, 610460, 1037782, 1220920, 2075564, 2594455, 4151128, 5188910, 10377820, 20755640]

約数ペア:

[(1, 20755640), (2, 10377820), (4, 5188910), (5, 4151128), (8, 2594455), (10, 2075564), (17, 1220920), (20, 1037782), (34, 610460), (40, 518891), (68, 305230), (85, 244184), (131, 158440), (136, 152615), (170, 122092), (233, 89080), (262, 79220), (340, 61046), (466, 44540), (524, 39610), (655, 31688), (680, 30523), (932, 22270), (1048, 19805), (1165, 17816), (1310, 15844), (1864, 11135), (2227, 9320), (2330, 8908), (2620, 7922), (3961, 5240), (4454, 4660)]