81708880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{367}}^1$

素因数の和:425

約数の個数: 120

約数和(自身を含む): 218486016

約数和(自身を除く): 136777136

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 23, 40, 44, 46, 55, 80, 88, 92, 110, 115, 121, 176, 184, 220, 230, 242, 253, 367, 368, 440, 460, 484, 506, 605, 734, 880, 920, 968, 1012, 1210, 1265, 1468, 1835, 1840, 1936, 2024, 2420, 2530, 2783, 2936, 3670, 4037, 4048, 4840, 5060, 5566, 5872, 7340, 8074, 8441, 9680, 10120, 11132, 13915, 14680, 16148, 16882, 20185, 20240, 22264, 27830, 29360, 32296, 33764, 40370, 42205, 44407, 44528, 55660, 64592, 67528, 80740, 84410, 88814, 92851, 111320, 135056, 161480, 168820, 177628, 185702, 222035, 222640, 322960, 337640, 355256, 371404, 444070, 464255, 675280, 710512, 742808, 888140, 928510, 1021361, 1485616, 1776280, 1857020, 2042722, 3552560, 3714040, 4085444, 5106805, 7428080, 8170888, 10213610, 16341776, 20427220, 40854440, 81708880]

約数ペア:

[(1, 81708880), (2, 40854440), (4, 20427220), (5, 16341776), (8, 10213610), (10, 8170888), (11, 7428080), (16, 5106805), (20, 4085444), (22, 3714040), (23, 3552560), (40, 2042722), (44, 1857020), (46, 1776280), (55, 1485616), (80, 1021361), (88, 928510), (92, 888140), (110, 742808), (115, 710512), (121, 675280), (176, 464255), (184, 444070), (220, 371404), (230, 355256), (242, 337640), (253, 322960), (367, 222640), (368, 222035), (440, 185702), (460, 177628), (484, 168820), (506, 161480), (605, 135056), (734, 111320), (880, 92851), (920, 88814), (968, 84410), (1012, 80740), (1210, 67528), (1265, 64592), (1468, 55660), (1835, 44528), (1840, 44407), (1936, 42205), (2024, 40370), (2420, 33764), (2530, 32296), (2783, 29360), (2936, 27830), (3670, 22264), (4037, 20240), (4048, 20185), (4840, 16882), (5060, 16148), (5566, 14680), (5872, 13915), (7340, 11132), (8074, 10120), (8441, 9680)]