628996820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{11399}}^1$

素因数の和:11528

約数の個数: 48

約数和(自身を含む): 1378944000

約数和(自身を除く): 749947180

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 89, 124, 155, 178, 310, 356, 445, 620, 890, 1780, 2759, 5518, 11036, 11399, 13795, 22798, 27590, 45596, 55180, 56995, 113990, 227980, 353369, 706738, 1014511, 1413476, 1766845, 2029022, 3533690, 4058044, 5072555, 7067380, 10145110, 20290220, 31449841, 62899682, 125799364, 157249205, 314498410, 628996820]

約数ペア:

[(1, 628996820), (2, 314498410), (4, 157249205), (5, 125799364), (10, 62899682), (20, 31449841), (31, 20290220), (62, 10145110), (89, 7067380), (124, 5072555), (155, 4058044), (178, 3533690), (310, 2029022), (356, 1766845), (445, 1413476), (620, 1014511), (890, 706738), (1780, 353369), (2759, 227980), (5518, 113990), (11036, 56995), (11399, 55180), (13795, 45596), (22798, 27590)]