21792640

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{2003}}^1$

素因数の和:2039

約数の個数: 64

約数和(自身を含む): 55190160

約数和(自身を除く): 33397520

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 272, 320, 340, 544, 640, 680, 1088, 1360, 2003, 2176, 2720, 4006, 5440, 8012, 10015, 10880, 16024, 20030, 32048, 34051, 40060, 64096, 68102, 80120, 128192, 136204, 160240, 170255, 256384, 272408, 320480, 340510, 544816, 640960, 681020, 1089632, 1281920, 1362040, 2179264, 2724080, 4358528, 5448160, 10896320, 21792640]

約数ペア:

[(1, 21792640), (2, 10896320), (4, 5448160), (5, 4358528), (8, 2724080), (10, 2179264), (16, 1362040), (17, 1281920), (20, 1089632), (32, 681020), (34, 640960), (40, 544816), (64, 340510), (68, 320480), (80, 272408), (85, 256384), (128, 170255), (136, 160240), (160, 136204), (170, 128192), (272, 80120), (320, 68102), (340, 64096), (544, 40060), (640, 34051), (680, 32048), (1088, 20030), (1360, 16024), (2003, 10880), (2176, 10015), (2720, 8012), (4006, 5440)]