156984920

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{21683}}^1$

素因数の和:21875

約数の個数: 32

約数和(自身を含む): 355183920

約数和(自身を除く): 198199000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 21683, 43366, 86732, 108415, 173464, 216830, 433660, 867320, 3924623, 7849246, 15698492, 19623115, 31396984, 39246230, 78492460, 156984920]

約数ペア:

[(1, 156984920), (2, 78492460), (4, 39246230), (5, 31396984), (8, 19623115), (10, 15698492), (20, 7849246), (40, 3924623), (181, 867320), (362, 433660), (724, 216830), (905, 173464), (1448, 108415), (1810, 86732), (3620, 43366), (7240, 21683)]