19545440

素因数分解:

$2^5\times 5^1\times {\mathrm{151}}^1\times {\mathrm{809}}^1$

素因数の和:975

約数の個数: 48

約数和(自身を含む): 46539360

約数和(自身を除く): 26993920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 151, 160, 302, 604, 755, 809, 1208, 1510, 1618, 2416, 3020, 3236, 4045, 4832, 6040, 6472, 8090, 12080, 12944, 16180, 24160, 25888, 32360, 64720, 122159, 129440, 244318, 488636, 610795, 977272, 1221590, 1954544, 2443180, 3909088, 4886360, 9772720, 19545440]

約数ペア:

[(1, 19545440), (2, 9772720), (4, 4886360), (5, 3909088), (8, 2443180), (10, 1954544), (16, 1221590), (20, 977272), (32, 610795), (40, 488636), (80, 244318), (151, 129440), (160, 122159), (302, 64720), (604, 32360), (755, 25888), (809, 24160), (1208, 16180), (1510, 12944), (1618, 12080), (2416, 8090), (3020, 6472), (3236, 6040), (4045, 4832)]