81351160

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{263}}^1$

素因数の和:341

約数の個数: 128

約数和(自身を含む): 216691200

約数和(自身を除く): 135340040

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 37, 38, 40, 44, 55, 74, 76, 88, 95, 110, 148, 152, 185, 190, 209, 220, 263, 296, 370, 380, 407, 418, 440, 526, 703, 740, 760, 814, 836, 1045, 1052, 1315, 1406, 1480, 1628, 1672, 2035, 2090, 2104, 2630, 2812, 2893, 3256, 3515, 4070, 4180, 4997, 5260, 5624, 5786, 7030, 7733, 8140, 8360, 9731, 9994, 10520, 11572, 14060, 14465, 15466, 16280, 19462, 19988, 23144, 24985, 28120, 28930, 30932, 38665, 38924, 39976, 48655, 49970, 54967, 57860, 61864, 77330, 77848, 97310, 99940, 107041, 109934, 115720, 154660, 184889, 194620, 199880, 214082, 219868, 274835, 309320, 369778, 389240, 428164, 439736, 535205, 549670, 739556, 856328, 924445, 1070410, 1099340, 1479112, 1848890, 2033779, 2140820, 2198680, 3697780, 4067558, 4281640, 7395560, 8135116, 10168895, 16270232, 20337790, 40675580, 81351160]

約数ペア:

[(1, 81351160), (2, 40675580), (4, 20337790), (5, 16270232), (8, 10168895), (10, 8135116), (11, 7395560), (19, 4281640), (20, 4067558), (22, 3697780), (37, 2198680), (38, 2140820), (40, 2033779), (44, 1848890), (55, 1479112), (74, 1099340), (76, 1070410), (88, 924445), (95, 856328), (110, 739556), (148, 549670), (152, 535205), (185, 439736), (190, 428164), (209, 389240), (220, 369778), (263, 309320), (296, 274835), (370, 219868), (380, 214082), (407, 199880), (418, 194620), (440, 184889), (526, 154660), (703, 115720), (740, 109934), (760, 107041), (814, 99940), (836, 97310), (1045, 77848), (1052, 77330), (1315, 61864), (1406, 57860), (1480, 54967), (1628, 49970), (1672, 48655), (2035, 39976), (2090, 38924), (2104, 38665), (2630, 30932), (2812, 28930), (2893, 28120), (3256, 24985), (3515, 23144), (4070, 19988), (4180, 19462), (4997, 16280), (5260, 15466), (5624, 14465), (5786, 14060), (7030, 11572), (7733, 10520), (8140, 9994), (8360, 9731)]