21517648

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{239}}^1\times {\mathrm{331}}^1$

素因数の和:595

約数の個数: 40

約数和(自身を含む): 44461440

約数和(自身を除く): 22943792

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 239, 272, 331, 478, 662, 956, 1324, 1912, 2648, 3824, 4063, 5296, 5627, 8126, 11254, 16252, 22508, 32504, 45016, 65008, 79109, 90032, 158218, 316436, 632872, 1265744, 1344853, 2689706, 5379412, 10758824, 21517648]

約数ペア:

[(1, 21517648), (2, 10758824), (4, 5379412), (8, 2689706), (16, 1344853), (17, 1265744), (34, 632872), (68, 316436), (136, 158218), (239, 90032), (272, 79109), (331, 65008), (478, 45016), (662, 32504), (956, 22508), (1324, 16252), (1912, 11254), (2648, 8126), (3824, 5627), (4063, 5296)]