138590920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{266521}}^1$

素因数の和:266545

約数の個数: 32

約数和(自身を含む): 335817720

約数和(自身を除く): 197226800

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 266521, 533042, 1066084, 1332605, 2132168, 2665210, 3464773, 5330420, 6929546, 10660840, 13859092, 17323865, 27718184, 34647730, 69295460, 138590920]

約数ペア:

[(1, 138590920), (2, 69295460), (4, 34647730), (5, 27718184), (8, 17323865), (10, 13859092), (13, 10660840), (20, 6929546), (26, 5330420), (40, 3464773), (52, 2665210), (65, 2132168), (104, 1332605), (130, 1066084), (260, 533042), (520, 266521)]