21072662001

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{355891}}^1$

素因数の和:355963

約数の個数: 40

約数和(自身を含む): 34105842144

約数和(自身を除く): 13033180143

約数列:

[1, 3, 9, 17, 27, 43, 51, 81, 129, 153, 387, 459, 731, 1161, 1377, 2193, 3483, 6579, 19737, 59211, 355891, 1067673, 3203019, 6050147, 9609057, 15303313, 18150441, 28827171, 45909939, 54451323, 137729817, 163353969, 260156321, 413189451, 490061907, 780468963, 1239568353, 2341406889, 7024220667, 21072662001]

約数ペア:

[(1, 21072662001), (3, 7024220667), (9, 2341406889), (17, 1239568353), (27, 780468963), (43, 490061907), (51, 413189451), (81, 260156321), (129, 163353969), (153, 137729817), (387, 54451323), (459, 45909939), (731, 28827171), (1161, 18150441), (1377, 15303313), (2193, 9609057), (3483, 6050147), (6579, 3203019), (19737, 1067673), (59211, 355891)]