19737440

素因数分解:

$2^5\times 5^1\times {\mathrm{281}}^1\times {\mathrm{439}}^1$

素因数の和:735

約数の個数: 48

約数和(自身を含む): 46902240

約数和(自身を除く): 27164800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 281, 439, 562, 878, 1124, 1405, 1756, 2195, 2248, 2810, 3512, 4390, 4496, 5620, 7024, 8780, 8992, 11240, 14048, 17560, 22480, 35120, 44960, 70240, 123359, 246718, 493436, 616795, 986872, 1233590, 1973744, 2467180, 3947488, 4934360, 9868720, 19737440]

約数ペア:

[(1, 19737440), (2, 9868720), (4, 4934360), (5, 3947488), (8, 2467180), (10, 1973744), (16, 1233590), (20, 986872), (32, 616795), (40, 493436), (80, 246718), (160, 123359), (281, 70240), (439, 44960), (562, 35120), (878, 22480), (1124, 17560), (1405, 14048), (1756, 11240), (2195, 8992), (2248, 8780), (2810, 7024), (3512, 5620), (4390, 4496)]