18491013080

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{509}}^1\times {\mathrm{21121}}^1$

素因数の和:21684

約数の個数: 64

約数和(自身を含む): 42657991200

約数和(自身を除く): 24166978120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 509, 860, 1018, 1720, 2036, 2545, 4072, 5090, 10180, 20360, 21121, 21887, 42242, 43774, 84484, 87548, 105605, 109435, 168968, 175096, 211210, 218870, 422420, 437740, 844840, 875480, 908203, 1816406, 3632812, 4541015, 7265624, 9082030, 10750589, 18164060, 21501178, 36328120, 43002356, 53752945, 86004712, 107505890, 215011780, 430023560, 462275327, 924550654, 1849101308, 2311376635, 3698202616, 4622753270, 9245506540, 18491013080]

約数ペア:

[(1, 18491013080), (2, 9245506540), (4, 4622753270), (5, 3698202616), (8, 2311376635), (10, 1849101308), (20, 924550654), (40, 462275327), (43, 430023560), (86, 215011780), (172, 107505890), (215, 86004712), (344, 53752945), (430, 43002356), (509, 36328120), (860, 21501178), (1018, 18164060), (1720, 10750589), (2036, 9082030), (2545, 7265624), (4072, 4541015), (5090, 3632812), (10180, 1816406), (20360, 908203), (21121, 875480), (21887, 844840), (42242, 437740), (43774, 422420), (84484, 218870), (87548, 211210), (105605, 175096), (109435, 168968)]