81691412

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 170261280

約数和(自身を除く): 88569868

約数列:

[1, 2, 4, 11, 19, 22, 37, 38, 44, 74, 76, 139, 148, 209, 278, 361, 407, 418, 556, 703, 722, 814, 836, 1406, 1444, 1529, 1628, 2641, 2812, 3058, 3971, 5143, 5282, 6116, 7733, 7942, 10286, 10564, 13357, 15466, 15884, 20572, 26714, 29051, 30932, 50179, 53428, 56573, 58102, 97717, 100358, 113146, 116204, 146927, 195434, 200716, 226292, 293854, 390868, 551969, 587708, 1074887, 1103938, 1856623, 2149774, 2207876, 3713246, 4299548, 7426492, 20422853, 40845706, 81691412]

約数ペア:

[(1, 81691412), (2, 40845706), (4, 20422853), (11, 7426492), (19, 4299548), (22, 3713246), (37, 2207876), (38, 2149774), (44, 1856623), (74, 1103938), (76, 1074887), (139, 587708), (148, 551969), (209, 390868), (278, 293854), (361, 226292), (407, 200716), (418, 195434), (556, 146927), (703, 116204), (722, 113146), (814, 100358), (836, 97717), (1406, 58102), (1444, 56573), (1529, 53428), (1628, 50179), (2641, 30932), (2812, 29051), (3058, 26714), (3971, 20572), (5143, 15884), (5282, 15466), (6116, 13357), (7733, 10564), (7942, 10286)]