72378400

素因数分解:

$2^5\times 5^2\times {\mathrm{90473}}^1$

素因数の和:90493

約数の個数: 36

約数和(自身を含む): 176695722

約数和(自身を除く): 104317322

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 160, 200, 400, 800, 90473, 180946, 361892, 452365, 723784, 904730, 1447568, 1809460, 2261825, 2895136, 3618920, 4523650, 7237840, 9047300, 14475680, 18094600, 36189200, 72378400]

約数ペア:

[(1, 72378400), (2, 36189200), (4, 18094600), (5, 14475680), (8, 9047300), (10, 7237840), (16, 4523650), (20, 3618920), (25, 2895136), (32, 2261825), (40, 1809460), (50, 1447568), (80, 904730), (100, 723784), (160, 452365), (200, 361892), (400, 180946), (800, 90473)]