81666468

素因数分解:

$2^2\times 3^5\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{281}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 241428096

約数和(自身を除く): 159761628

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 23, 26, 27, 36, 39, 46, 52, 54, 69, 78, 81, 92, 108, 117, 138, 156, 162, 207, 234, 243, 276, 281, 299, 324, 351, 414, 468, 486, 562, 598, 621, 702, 828, 843, 897, 972, 1053, 1124, 1196, 1242, 1404, 1686, 1794, 1863, 2106, 2484, 2529, 2691, 3159, 3372, 3588, 3653, 3726, 4212, 5058, 5382, 5589, 6318, 6463, 7306, 7452, 7587, 8073, 10116, 10764, 10959, 11178, 12636, 12926, 14612, 15174, 16146, 19389, 21918, 22356, 22761, 24219, 25852, 30348, 32292, 32877, 38778, 43836, 45522, 48438, 58167, 65754, 68283, 72657, 77556, 84019, 91044, 96876, 98631, 116334, 131508, 136566, 145314, 168038, 174501, 197262, 232668, 252057, 273132, 290628, 295893, 336076, 349002, 394524, 504114, 523503, 591786, 698004, 756171, 887679, 1008228, 1047006, 1183572, 1512342, 1570509, 1775358, 2094012, 2268513, 3024684, 3141018, 3550716, 4537026, 6282036, 6805539, 9074052, 13611078, 20416617, 27222156, 40833234, 81666468]

約数ペア:

[(1, 81666468), (2, 40833234), (3, 27222156), (4, 20416617), (6, 13611078), (9, 9074052), (12, 6805539), (13, 6282036), (18, 4537026), (23, 3550716), (26, 3141018), (27, 3024684), (36, 2268513), (39, 2094012), (46, 1775358), (52, 1570509), (54, 1512342), (69, 1183572), (78, 1047006), (81, 1008228), (92, 887679), (108, 756171), (117, 698004), (138, 591786), (156, 523503), (162, 504114), (207, 394524), (234, 349002), (243, 336076), (276, 295893), (281, 290628), (299, 273132), (324, 252057), (351, 232668), (414, 197262), (468, 174501), (486, 168038), (562, 145314), (598, 136566), (621, 131508), (702, 116334), (828, 98631), (843, 96876), (897, 91044), (972, 84019), (1053, 77556), (1124, 72657), (1196, 68283), (1242, 65754), (1404, 58167), (1686, 48438), (1794, 45522), (1863, 43836), (2106, 38778), (2484, 32877), (2529, 32292), (2691, 30348), (3159, 25852), (3372, 24219), (3588, 22761), (3653, 22356), (3726, 21918), (4212, 19389), (5058, 16146), (5382, 15174), (5589, 14612), (6318, 12926), (6463, 12636), (7306, 11178), (7452, 10959), (7587, 10764), (8073, 10116)]