19699408

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{199}}^1\times {\mathrm{269}}^1$

素因数の和:499

約数の個数: 40

約数和(自身を含む): 40176000

約数和(自身を除く): 20476592

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 199, 269, 368, 398, 538, 796, 1076, 1592, 2152, 3184, 4304, 4577, 6187, 9154, 12374, 18308, 24748, 36616, 49496, 53531, 73232, 98992, 107062, 214124, 428248, 856496, 1231213, 2462426, 4924852, 9849704, 19699408]

約数ペア:

[(1, 19699408), (2, 9849704), (4, 4924852), (8, 2462426), (16, 1231213), (23, 856496), (46, 428248), (92, 214124), (184, 107062), (199, 98992), (269, 73232), (368, 53531), (398, 49496), (538, 36616), (796, 24748), (1076, 18308), (1592, 12374), (2152, 9154), (3184, 6187), (4304, 4577)]