78112400

素因数分解:

$2^4\times 5^2\times {\mathrm{195281}}^1$

素因数の和:195299

約数の個数: 30

約数和(自身を含む): 187666002

約数和(自身を除く): 109553602

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 195281, 390562, 781124, 976405, 1562248, 1952810, 3124496, 3905620, 4882025, 7811240, 9764050, 15622480, 19528100, 39056200, 78112400]

約数ペア:

[(1, 78112400), (2, 39056200), (4, 19528100), (5, 15622480), (8, 9764050), (10, 7811240), (16, 4882025), (20, 3905620), (25, 3124496), (40, 1952810), (50, 1562248), (80, 976405), (100, 781124), (200, 390562), (400, 195281)]