78438400

素因数分解:

$2^{13}\times 5^2\times {\mathrm{383}}^1$

素因数の和:419

約数の個数: 84

約数和(自身を含む): 195023232

約数和(自身を除く): 116584832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 383, 400, 512, 640, 766, 800, 1024, 1280, 1532, 1600, 1915, 2048, 2560, 3064, 3200, 3830, 4096, 5120, 6128, 6400, 7660, 8192, 9575, 10240, 12256, 12800, 15320, 19150, 20480, 24512, 25600, 30640, 38300, 40960, 49024, 51200, 61280, 76600, 98048, 102400, 122560, 153200, 196096, 204800, 245120, 306400, 392192, 490240, 612800, 784384, 980480, 1225600, 1568768, 1960960, 2451200, 3137536, 3921920, 4902400, 7843840, 9804800, 15687680, 19609600, 39219200, 78438400]

約数ペア:

[(1, 78438400), (2, 39219200), (4, 19609600), (5, 15687680), (8, 9804800), (10, 7843840), (16, 4902400), (20, 3921920), (25, 3137536), (32, 2451200), (40, 1960960), (50, 1568768), (64, 1225600), (80, 980480), (100, 784384), (128, 612800), (160, 490240), (200, 392192), (256, 306400), (320, 245120), (383, 204800), (400, 196096), (512, 153200), (640, 122560), (766, 102400), (800, 98048), (1024, 76600), (1280, 61280), (1532, 51200), (1600, 49024), (1915, 40960), (2048, 38300), (2560, 30640), (3064, 25600), (3200, 24512), (3830, 20480), (4096, 19150), (5120, 15320), (6128, 12800), (6400, 12256), (7660, 10240), (8192, 9575)]