18933920

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6961}}^1$

素因数の和:6993

約数の個数: 48

約数和(自身を含む): 47369448

約数和(自身を除く): 28435528

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 6961, 13922, 27844, 34805, 55688, 69610, 111376, 118337, 139220, 222752, 236674, 278440, 473348, 556880, 591685, 946696, 1113760, 1183370, 1893392, 2366740, 3786784, 4733480, 9466960, 18933920]

約数ペア:

[(1, 18933920), (2, 9466960), (4, 4733480), (5, 3786784), (8, 2366740), (10, 1893392), (16, 1183370), (17, 1113760), (20, 946696), (32, 591685), (34, 556880), (40, 473348), (68, 278440), (80, 236674), (85, 222752), (136, 139220), (160, 118337), (170, 111376), (272, 69610), (340, 55688), (544, 34805), (680, 27844), (1360, 13922), (2720, 6961)]