19789550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^2\times {\mathrm{3271}}^1$

素因数の和:3305

約数の個数: 36

約数和(自身を含む): 40471368

約数和(自身を除く): 20681818

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 121, 242, 275, 550, 605, 1210, 3025, 3271, 6050, 6542, 16355, 32710, 35981, 71962, 81775, 163550, 179905, 359810, 395791, 791582, 899525, 1799050, 1978955, 3957910, 9894775, 19789550]

約数ペア:

[(1, 19789550), (2, 9894775), (5, 3957910), (10, 1978955), (11, 1799050), (22, 899525), (25, 791582), (50, 395791), (55, 359810), (110, 179905), (121, 163550), (242, 81775), (275, 71962), (550, 35981), (605, 32710), (1210, 16355), (3025, 6542), (3271, 6050)]