678995140

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{643}}^1\times {\mathrm{1427}}^1$

素因数の和:2116

約数の個数: 48

約数和(自身を含む): 1467732672

約数和(自身を除く): 788737532

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 643, 740, 1286, 1427, 2572, 2854, 3215, 5708, 6430, 7135, 12860, 14270, 23791, 28540, 47582, 52799, 95164, 105598, 118955, 211196, 237910, 263995, 475820, 527990, 917561, 1055980, 1835122, 3670244, 4587805, 9175610, 18351220, 33949757, 67899514, 135799028, 169748785, 339497570, 678995140]

約数ペア:

[(1, 678995140), (2, 339497570), (4, 169748785), (5, 135799028), (10, 67899514), (20, 33949757), (37, 18351220), (74, 9175610), (148, 4587805), (185, 3670244), (370, 1835122), (643, 1055980), (740, 917561), (1286, 527990), (1427, 475820), (2572, 263995), (2854, 237910), (3215, 211196), (5708, 118955), (6430, 105598), (7135, 95164), (12860, 52799), (14270, 47582), (23791, 28540)]