20806916720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13688761}}^1$

素因数の和:13688793

約数の個数: 40

約数和(自身を含む): 50922194640

約数和(自身を除く): 30115277920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13688761, 27377522, 54755044, 68443805, 109510088, 136887610, 219020176, 260086459, 273775220, 520172918, 547550440, 1040345836, 1095100880, 1300432295, 2080691672, 2600864590, 4161383344, 5201729180, 10403458360, 20806916720]

約数ペア:

[(1, 20806916720), (2, 10403458360), (4, 5201729180), (5, 4161383344), (8, 2600864590), (10, 2080691672), (16, 1300432295), (19, 1095100880), (20, 1040345836), (38, 547550440), (40, 520172918), (76, 273775220), (80, 260086459), (95, 219020176), (152, 136887610), (190, 109510088), (304, 68443805), (380, 54755044), (760, 27377522), (1520, 13688761)]