218973650

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{139}}^1\times {\mathrm{643}}^1$

素因数の和:808

約数の個数: 72

約数和(自身を含む): 477938160

約数和(自身を除く): 258964510

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 139, 175, 245, 278, 350, 490, 643, 695, 973, 1225, 1286, 1390, 1946, 2450, 3215, 3475, 4501, 4865, 6430, 6811, 6950, 9002, 9730, 13622, 16075, 22505, 24325, 31507, 32150, 34055, 45010, 48650, 63014, 68110, 89377, 112525, 157535, 170275, 178754, 225050, 315070, 340550, 446885, 625639, 787675, 893770, 1251278, 1575350, 2234425, 3128195, 4379473, 4468850, 6256390, 8758946, 15640975, 21897365, 31281950, 43794730, 109486825, 218973650]

約数ペア:

[(1, 218973650), (2, 109486825), (5, 43794730), (7, 31281950), (10, 21897365), (14, 15640975), (25, 8758946), (35, 6256390), (49, 4468850), (50, 4379473), (70, 3128195), (98, 2234425), (139, 1575350), (175, 1251278), (245, 893770), (278, 787675), (350, 625639), (490, 446885), (643, 340550), (695, 315070), (973, 225050), (1225, 178754), (1286, 170275), (1390, 157535), (1946, 112525), (2450, 89377), (3215, 68110), (3475, 63014), (4501, 48650), (4865, 45010), (6430, 34055), (6811, 32150), (6950, 31507), (9002, 24325), (9730, 22505), (13622, 16075)]