19604800

素因数分解:

$2^6\times 5^2\times {\mathrm{12253}}^1$

素因数の和:12275

約数の個数: 42

約数和(自身を含む): 48243998

約数和(自身を除く): 28639198

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 160, 200, 320, 400, 800, 1600, 12253, 24506, 49012, 61265, 98024, 122530, 196048, 245060, 306325, 392096, 490120, 612650, 784192, 980240, 1225300, 1960480, 2450600, 3920960, 4901200, 9802400, 19604800]

約数ペア:

[(1, 19604800), (2, 9802400), (4, 4901200), (5, 3920960), (8, 2450600), (10, 1960480), (16, 1225300), (20, 980240), (25, 784192), (32, 612650), (40, 490120), (50, 392096), (64, 306325), (80, 245060), (100, 196048), (160, 122530), (200, 98024), (320, 61265), (400, 49012), (800, 24506), (1600, 12253)]