18638025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{131}}^1\times {\mathrm{271}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 35616768

約数和(自身を除く): 16978743

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 131, 175, 271, 393, 525, 655, 813, 917, 1355, 1897, 1965, 2751, 3275, 4065, 4585, 5691, 6775, 9485, 9825, 13755, 20325, 22925, 28455, 35501, 47425, 68775, 106503, 142275, 177505, 248507, 532515, 745521, 887525, 1242535, 2662575, 3727605, 6212675, 18638025]

約数ペア:

[(1, 18638025), (3, 6212675), (5, 3727605), (7, 2662575), (15, 1242535), (21, 887525), (25, 745521), (35, 532515), (75, 248507), (105, 177505), (131, 142275), (175, 106503), (271, 68775), (393, 47425), (525, 35501), (655, 28455), (813, 22925), (917, 20325), (1355, 13755), (1897, 9825), (1965, 9485), (2751, 6775), (3275, 5691), (4065, 4585)]