21387808

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{51413}}^1$

素因数の和:51436

約数の個数: 24

約数和(自身を含む): 45347148

約数和(自身を除く): 23959340

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 208, 416, 51413, 102826, 205652, 411304, 668369, 822608, 1336738, 1645216, 2673476, 5346952, 10693904, 21387808]

約数ペア:

[(1, 21387808), (2, 10693904), (4, 5346952), (8, 2673476), (13, 1645216), (16, 1336738), (26, 822608), (32, 668369), (52, 411304), (104, 205652), (208, 102826), (416, 51413)]