21989080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28933}}^1$

素因数の和:28963

約数の個数: 32

約数和(自身を含む): 52081200

約数和(自身を除く): 30092120

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28933, 57866, 115732, 144665, 231464, 289330, 549727, 578660, 1099454, 1157320, 2198908, 2748635, 4397816, 5497270, 10994540, 21989080]

約数ペア:

[(1, 21989080), (2, 10994540), (4, 5497270), (5, 4397816), (8, 2748635), (10, 2198908), (19, 1157320), (20, 1099454), (38, 578660), (40, 549727), (76, 289330), (95, 231464), (152, 144665), (190, 115732), (380, 57866), (760, 28933)]