81655320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{2711}}^1$

素因数の和:2976

約数の個数: 64

約数和(自身を含む): 246032640

約数和(自身を除く): 164377320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 251, 502, 753, 1004, 1255, 1506, 2008, 2510, 2711, 3012, 3765, 5020, 5422, 6024, 7530, 8133, 10040, 10844, 13555, 15060, 16266, 21688, 27110, 30120, 32532, 40665, 54220, 65064, 81330, 108440, 162660, 325320, 680461, 1360922, 2041383, 2721844, 3402305, 4082766, 5443688, 6804610, 8165532, 10206915, 13609220, 16331064, 20413830, 27218440, 40827660, 81655320]

約数ペア:

[(1, 81655320), (2, 40827660), (3, 27218440), (4, 20413830), (5, 16331064), (6, 13609220), (8, 10206915), (10, 8165532), (12, 6804610), (15, 5443688), (20, 4082766), (24, 3402305), (30, 2721844), (40, 2041383), (60, 1360922), (120, 680461), (251, 325320), (502, 162660), (753, 108440), (1004, 81330), (1255, 65064), (1506, 54220), (2008, 40665), (2510, 32532), (2711, 30120), (3012, 27110), (3765, 21688), (5020, 16266), (5422, 15060), (6024, 13555), (7530, 10844), (8133, 10040)]