19139725

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{79}}^1\times {\mathrm{881}}^1$

素因数の和:981

約数の個数: 24

約数和(自身を含む): 26248320

約数和(自身を除く): 7108595

約数列:

[1, 5, 11, 25, 55, 79, 275, 395, 869, 881, 1975, 4345, 4405, 9691, 21725, 22025, 48455, 69599, 242275, 347995, 765589, 1739975, 3827945, 19139725]

約数ペア:

[(1, 19139725), (5, 3827945), (11, 1739975), (25, 765589), (55, 347995), (79, 242275), (275, 69599), (395, 48455), (869, 22025), (881, 21725), (1975, 9691), (4345, 4405)]