21188280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{317}}^1\times {\mathrm{557}}^1$

素因数の和:888

約数の個数: 64

約数和(自身を含む): 63879840

約数和(自身を除く): 42691560

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 317, 557, 634, 951, 1114, 1268, 1585, 1671, 1902, 2228, 2536, 2785, 3170, 3342, 3804, 4456, 4755, 5570, 6340, 6684, 7608, 8355, 9510, 11140, 12680, 13368, 16710, 19020, 22280, 33420, 38040, 66840, 176569, 353138, 529707, 706276, 882845, 1059414, 1412552, 1765690, 2118828, 2648535, 3531380, 4237656, 5297070, 7062760, 10594140, 21188280]

約数ペア:

[(1, 21188280), (2, 10594140), (3, 7062760), (4, 5297070), (5, 4237656), (6, 3531380), (8, 2648535), (10, 2118828), (12, 1765690), (15, 1412552), (20, 1059414), (24, 882845), (30, 706276), (40, 529707), (60, 353138), (120, 176569), (317, 66840), (557, 38040), (634, 33420), (951, 22280), (1114, 19020), (1268, 16710), (1585, 13368), (1671, 12680), (1902, 11140), (2228, 9510), (2536, 8355), (2785, 7608), (3170, 6684), (3342, 6340), (3804, 5570), (4456, 4755)]