21269937

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:361

約数の個数: 32

約数和(自身を含む): 32091136

約数和(自身を除く): 10821199

約数列:

[1, 3, 13, 31, 39, 73, 93, 219, 241, 403, 723, 949, 1209, 2263, 2847, 3133, 6789, 7471, 9399, 17593, 22413, 29419, 52779, 88257, 97123, 228709, 291369, 545383, 686127, 1636149, 7089979, 21269937]

約数ペア:

[(1, 21269937), (3, 7089979), (13, 1636149), (31, 686127), (39, 545383), (73, 291369), (93, 228709), (219, 97123), (241, 88257), (403, 52779), (723, 29419), (949, 22413), (1209, 17593), (2263, 9399), (2847, 7471), (3133, 6789)]