20523760

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{15091}}^1$

素因数の和:15121

約数の個数: 40

約数和(自身を含む): 50528016

約数和(自身を除く): 30004256

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 15091, 30182, 60364, 75455, 120728, 150910, 241456, 256547, 301820, 513094, 603640, 1026188, 1207280, 1282735, 2052376, 2565470, 4104752, 5130940, 10261880, 20523760]

約数ペア:

[(1, 20523760), (2, 10261880), (4, 5130940), (5, 4104752), (8, 2565470), (10, 2052376), (16, 1282735), (17, 1207280), (20, 1026188), (34, 603640), (40, 513094), (68, 301820), (80, 256547), (85, 241456), (136, 150910), (170, 120728), (272, 75455), (340, 60364), (680, 30182), (1360, 15091)]