21205908

素因数分解:

$2^2\times 3^3\times {\mathrm{23}}^1\times {\mathrm{8537}}^1$

素因数の和:8573

約数の個数: 48

約数和(自身を含む): 57375360

約数和(自身を除く): 36169452

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 27, 36, 46, 54, 69, 92, 108, 138, 207, 276, 414, 621, 828, 1242, 2484, 8537, 17074, 25611, 34148, 51222, 76833, 102444, 153666, 196351, 230499, 307332, 392702, 460998, 589053, 785404, 921996, 1178106, 1767159, 2356212, 3534318, 5301477, 7068636, 10602954, 21205908]

約数ペア:

[(1, 21205908), (2, 10602954), (3, 7068636), (4, 5301477), (6, 3534318), (9, 2356212), (12, 1767159), (18, 1178106), (23, 921996), (27, 785404), (36, 589053), (46, 460998), (54, 392702), (69, 307332), (92, 230499), (108, 196351), (138, 153666), (207, 102444), (276, 76833), (414, 51222), (621, 34148), (828, 25611), (1242, 17074), (2484, 8537)]