18225550

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:242

約数の個数: 72

約数和(自身を含む): 40584456

約数和(自身を除く): 22358906

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 43, 49, 50, 70, 86, 98, 173, 175, 215, 245, 301, 346, 350, 430, 490, 602, 865, 1075, 1211, 1225, 1505, 1730, 2107, 2150, 2422, 2450, 3010, 4214, 4325, 6055, 7439, 7525, 8477, 8650, 10535, 12110, 14878, 15050, 16954, 21070, 30275, 37195, 42385, 52073, 52675, 60550, 74390, 84770, 104146, 105350, 185975, 211925, 260365, 364511, 371950, 423850, 520730, 729022, 1301825, 1822555, 2603650, 3645110, 9112775, 18225550]

約数ペア:

[(1, 18225550), (2, 9112775), (5, 3645110), (7, 2603650), (10, 1822555), (14, 1301825), (25, 729022), (35, 520730), (43, 423850), (49, 371950), (50, 364511), (70, 260365), (86, 211925), (98, 185975), (173, 105350), (175, 104146), (215, 84770), (245, 74390), (301, 60550), (346, 52675), (350, 52073), (430, 42385), (490, 37195), (602, 30275), (865, 21070), (1075, 16954), (1211, 15050), (1225, 14878), (1505, 12110), (1730, 10535), (2107, 8650), (2150, 8477), (2422, 7525), (2450, 7439), (3010, 6055), (4214, 4325)]