20881970

素因数分解:

$2^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:410

約数の個数: 32

約数和(自身を含む): 38525760

約数和(自身を除く): 17643790

約数列:

[1, 2, 5, 10, 83, 139, 166, 181, 278, 362, 415, 695, 830, 905, 1390, 1810, 11537, 15023, 23074, 25159, 30046, 50318, 57685, 75115, 115370, 125795, 150230, 251590, 2088197, 4176394, 10440985, 20881970]

約数ペア:

[(1, 20881970), (2, 10440985), (5, 4176394), (10, 2088197), (83, 251590), (139, 150230), (166, 125795), (181, 115370), (278, 75115), (362, 57685), (415, 50318), (695, 30046), (830, 25159), (905, 23074), (1390, 15023), (1810, 11537)]