21872284

素因数分解:

$2^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{89}}^1\times {\mathrm{131}}^1$

素因数の和:298

約数の個数: 48

約数和(自身を含む): 45239040

約数和(自身を除く): 23366756

約数列:

[1, 2, 4, 7, 14, 28, 67, 89, 131, 134, 178, 262, 268, 356, 469, 524, 623, 917, 938, 1246, 1834, 1876, 2492, 3668, 5963, 8777, 11659, 11926, 17554, 23318, 23852, 35108, 41741, 46636, 61439, 81613, 83482, 122878, 163226, 166964, 245756, 326452, 781153, 1562306, 3124612, 5468071, 10936142, 21872284]

約数ペア:

[(1, 21872284), (2, 10936142), (4, 5468071), (7, 3124612), (14, 1562306), (28, 781153), (67, 326452), (89, 245756), (131, 166964), (134, 163226), (178, 122878), (262, 83482), (268, 81613), (356, 61439), (469, 46636), (524, 41741), (623, 35108), (917, 23852), (938, 23318), (1246, 17554), (1834, 11926), (1876, 11659), (2492, 8777), (3668, 5963)]