20576720

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:300

約数の個数: 80

約数和(自身を含む): 51103872

約数和(自身を除く): 30527152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 53, 80, 92, 106, 115, 184, 211, 212, 230, 265, 368, 422, 424, 460, 530, 844, 848, 920, 1055, 1060, 1219, 1688, 1840, 2110, 2120, 2438, 3376, 4220, 4240, 4853, 4876, 6095, 8440, 9706, 9752, 11183, 12190, 16880, 19412, 19504, 22366, 24265, 24380, 38824, 44732, 48530, 48760, 55915, 77648, 89464, 97060, 97520, 111830, 178928, 194120, 223660, 257209, 388240, 447320, 514418, 894640, 1028836, 1286045, 2057672, 2572090, 4115344, 5144180, 10288360, 20576720]

約数ペア:

[(1, 20576720), (2, 10288360), (4, 5144180), (5, 4115344), (8, 2572090), (10, 2057672), (16, 1286045), (20, 1028836), (23, 894640), (40, 514418), (46, 447320), (53, 388240), (80, 257209), (92, 223660), (106, 194120), (115, 178928), (184, 111830), (211, 97520), (212, 97060), (230, 89464), (265, 77648), (368, 55915), (422, 48760), (424, 48530), (460, 44732), (530, 38824), (844, 24380), (848, 24265), (920, 22366), (1055, 19504), (1060, 19412), (1219, 16880), (1688, 12190), (1840, 11183), (2110, 9752), (2120, 9706), (2438, 8440), (3376, 6095), (4220, 4876), (4240, 4853)]