640448460

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{373}}^1\times {\mathrm{9539}}^1$

素因数の和:9927

約数の個数: 72

約数和(自身を含む): 1948106160

約数和(自身を除く): 1307657700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 373, 746, 1119, 1492, 1865, 2238, 3357, 3730, 4476, 5595, 6714, 7460, 9539, 11190, 13428, 16785, 19078, 22380, 28617, 33570, 38156, 47695, 57234, 67140, 85851, 95390, 114468, 143085, 171702, 190780, 286170, 343404, 429255, 572340, 858510, 1717020, 3558047, 7116094, 10674141, 14232188, 17790235, 21348282, 32022423, 35580470, 42696564, 53370705, 64044846, 71160940, 106741410, 128089692, 160112115, 213482820, 320224230, 640448460]

約数ペア:

[(1, 640448460), (2, 320224230), (3, 213482820), (4, 160112115), (5, 128089692), (6, 106741410), (9, 71160940), (10, 64044846), (12, 53370705), (15, 42696564), (18, 35580470), (20, 32022423), (30, 21348282), (36, 17790235), (45, 14232188), (60, 10674141), (90, 7116094), (180, 3558047), (373, 1717020), (746, 858510), (1119, 572340), (1492, 429255), (1865, 343404), (2238, 286170), (3357, 190780), (3730, 171702), (4476, 143085), (5595, 114468), (6714, 95390), (7460, 85851), (9539, 67140), (11190, 57234), (13428, 47695), (16785, 38156), (19078, 33570), (22380, 28617)]