71135920

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1\times {\mathrm{103}}^1$

素因数の和:302

約数の個数: 80

約数和(自身を含む): 170614080

約数和(自身を除く): 99478160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 97, 103, 178, 194, 206, 356, 388, 412, 445, 485, 515, 712, 776, 824, 890, 970, 1030, 1424, 1552, 1648, 1780, 1940, 2060, 3560, 3880, 4120, 7120, 7760, 8240, 8633, 9167, 9991, 17266, 18334, 19982, 34532, 36668, 39964, 43165, 45835, 49955, 69064, 73336, 79928, 86330, 91670, 99910, 138128, 146672, 159856, 172660, 183340, 199820, 345320, 366680, 399640, 690640, 733360, 799280, 889199, 1778398, 3556796, 4445995, 7113592, 8891990, 14227184, 17783980, 35567960, 71135920]

約数ペア:

[(1, 71135920), (2, 35567960), (4, 17783980), (5, 14227184), (8, 8891990), (10, 7113592), (16, 4445995), (20, 3556796), (40, 1778398), (80, 889199), (89, 799280), (97, 733360), (103, 690640), (178, 399640), (194, 366680), (206, 345320), (356, 199820), (388, 183340), (412, 172660), (445, 159856), (485, 146672), (515, 138128), (712, 99910), (776, 91670), (824, 86330), (890, 79928), (970, 73336), (1030, 69064), (1424, 49955), (1552, 45835), (1648, 43165), (1780, 39964), (1940, 36668), (2060, 34532), (3560, 19982), (3880, 18334), (4120, 17266), (7120, 9991), (7760, 9167), (8240, 8633)]