81917628

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{79}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 231060480

約数和(自身を除く): 149142852

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 23, 26, 34, 39, 46, 51, 52, 68, 69, 78, 79, 92, 102, 138, 156, 158, 204, 221, 237, 276, 289, 299, 316, 391, 442, 474, 578, 598, 663, 782, 867, 884, 897, 948, 1027, 1156, 1173, 1196, 1326, 1343, 1564, 1734, 1794, 1817, 2054, 2346, 2652, 2686, 3081, 3468, 3588, 3634, 3757, 4029, 4108, 4692, 5083, 5372, 5451, 6162, 6647, 7268, 7514, 8058, 10166, 10902, 11271, 12324, 13294, 15028, 15249, 16116, 17459, 19941, 20332, 21804, 22542, 22831, 23621, 26588, 30498, 30889, 34918, 39882, 45084, 45662, 47242, 52377, 60996, 61778, 68493, 69836, 70863, 79764, 86411, 91324, 92667, 94484, 104754, 123556, 136986, 141726, 172822, 185334, 209508, 259233, 273972, 283452, 296803, 345644, 370668, 401557, 518466, 525113, 593606, 803114, 890409, 1036932, 1050226, 1187212, 1204671, 1575339, 1606228, 1780818, 2100452, 2409342, 3150678, 3561636, 4818684, 6301356, 6826469, 13652938, 20479407, 27305876, 40958814, 81917628]

約数ペア:

[(1, 81917628), (2, 40958814), (3, 27305876), (4, 20479407), (6, 13652938), (12, 6826469), (13, 6301356), (17, 4818684), (23, 3561636), (26, 3150678), (34, 2409342), (39, 2100452), (46, 1780818), (51, 1606228), (52, 1575339), (68, 1204671), (69, 1187212), (78, 1050226), (79, 1036932), (92, 890409), (102, 803114), (138, 593606), (156, 525113), (158, 518466), (204, 401557), (221, 370668), (237, 345644), (276, 296803), (289, 283452), (299, 273972), (316, 259233), (391, 209508), (442, 185334), (474, 172822), (578, 141726), (598, 136986), (663, 123556), (782, 104754), (867, 94484), (884, 92667), (897, 91324), (948, 86411), (1027, 79764), (1156, 70863), (1173, 69836), (1196, 68493), (1326, 61778), (1343, 60996), (1564, 52377), (1734, 47242), (1794, 45662), (1817, 45084), (2054, 39882), (2346, 34918), (2652, 30889), (2686, 30498), (3081, 26588), (3468, 23621), (3588, 22831), (3634, 22542), (3757, 21804), (4029, 20332), (4108, 19941), (4692, 17459), (5083, 16116), (5372, 15249), (5451, 15028), (6162, 13294), (6647, 12324), (7268, 11271), (7514, 10902), (8058, 10166)]