21904720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{14411}}^1$

素因数の和:14443

約数の個数: 40

約数和(自身を含む): 53612640

約数和(自身を除く): 31707920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 14411, 28822, 57644, 72055, 115288, 144110, 230576, 273809, 288220, 547618, 576440, 1095236, 1152880, 1369045, 2190472, 2738090, 4380944, 5476180, 10952360, 21904720]

約数ペア:

[(1, 21904720), (2, 10952360), (4, 5476180), (5, 4380944), (8, 2738090), (10, 2190472), (16, 1369045), (19, 1152880), (20, 1095236), (38, 576440), (40, 547618), (76, 288220), (80, 273809), (95, 230576), (152, 144110), (190, 115288), (304, 72055), (380, 57644), (760, 28822), (1520, 14411)]