68857520

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 80

約数和(自身を含む): 170748000

約数和(自身を除く): 101890480

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 509, 712, 760, 890, 1018, 1424, 1520, 1691, 1780, 2036, 2545, 3382, 3560, 4072, 5090, 6764, 7120, 8144, 8455, 9671, 10180, 13528, 16910, 19342, 20360, 27056, 33820, 38684, 40720, 45301, 48355, 67640, 77368, 90602, 96710, 135280, 154736, 181204, 193420, 226505, 362408, 386840, 453010, 724816, 773680, 860719, 906020, 1721438, 1812040, 3442876, 3624080, 4303595, 6885752, 8607190, 13771504, 17214380, 34428760, 68857520]

約数ペア:

[(1, 68857520), (2, 34428760), (4, 17214380), (5, 13771504), (8, 8607190), (10, 6885752), (16, 4303595), (19, 3624080), (20, 3442876), (38, 1812040), (40, 1721438), (76, 906020), (80, 860719), (89, 773680), (95, 724816), (152, 453010), (178, 386840), (190, 362408), (304, 226505), (356, 193420), (380, 181204), (445, 154736), (509, 135280), (712, 96710), (760, 90602), (890, 77368), (1018, 67640), (1424, 48355), (1520, 45301), (1691, 40720), (1780, 38684), (2036, 33820), (2545, 27056), (3382, 20360), (3560, 19342), (4072, 16910), (5090, 13528), (6764, 10180), (7120, 9671), (8144, 8455)]