18507140

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{431}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 41368320

約数和(自身を除く): 22861180

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 431, 452, 565, 862, 1130, 1724, 2147, 2155, 2260, 4294, 4310, 8189, 8588, 8620, 10735, 16378, 21470, 32756, 40945, 42940, 48703, 81890, 97406, 163780, 194812, 243515, 487030, 925357, 974060, 1850714, 3701428, 4626785, 9253570, 18507140]

約数ペア:

[(1, 18507140), (2, 9253570), (4, 4626785), (5, 3701428), (10, 1850714), (19, 974060), (20, 925357), (38, 487030), (76, 243515), (95, 194812), (113, 163780), (190, 97406), (226, 81890), (380, 48703), (431, 42940), (452, 40945), (565, 32756), (862, 21470), (1130, 16378), (1724, 10735), (2147, 8620), (2155, 8588), (2260, 8189), (4294, 4310)]