21000718476

素因数分解:

$2^2\times 3^3\times {\mathrm{127}}^1\times {\mathrm{1531111}}^1$

素因数の和:1531251

約数の個数: 48

約数和(自身を含む): 54875054080

約数和(自身を除く): 33874335604

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 127, 254, 381, 508, 762, 1143, 1524, 2286, 3429, 4572, 6858, 13716, 1531111, 3062222, 4593333, 6124444, 9186666, 13779999, 18373332, 27559998, 41339997, 55119996, 82679994, 165359988, 194451097, 388902194, 583353291, 777804388, 1166706582, 1750059873, 2333413164, 3500119746, 5250179619, 7000239492, 10500359238, 21000718476]

約数ペア:

[(1, 21000718476), (2, 10500359238), (3, 7000239492), (4, 5250179619), (6, 3500119746), (9, 2333413164), (12, 1750059873), (18, 1166706582), (27, 777804388), (36, 583353291), (54, 388902194), (108, 194451097), (127, 165359988), (254, 82679994), (381, 55119996), (508, 41339997), (762, 27559998), (1143, 18373332), (1524, 13779999), (2286, 9186666), (3429, 6124444), (4572, 4593333), (6858, 3062222), (13716, 1531111)]