81431792

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:298

約数の個数: 80

約数和(自身を含む): 178821888

約数和(自身を除く): 97390096

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 73, 104, 124, 146, 173, 208, 248, 292, 346, 403, 496, 584, 692, 806, 949, 1168, 1384, 1612, 1898, 2249, 2263, 2768, 3224, 3796, 4498, 4526, 5363, 6448, 7592, 8996, 9052, 10726, 12629, 15184, 17992, 18104, 21452, 25258, 29419, 35984, 36208, 42904, 50516, 58838, 69719, 85808, 101032, 117676, 139438, 164177, 202064, 235352, 278876, 328354, 391499, 470704, 557752, 656708, 782998, 1115504, 1313416, 1565996, 2626832, 3131992, 5089487, 6263984, 10178974, 20357948, 40715896, 81431792]

約数ペア:

[(1, 81431792), (2, 40715896), (4, 20357948), (8, 10178974), (13, 6263984), (16, 5089487), (26, 3131992), (31, 2626832), (52, 1565996), (62, 1313416), (73, 1115504), (104, 782998), (124, 656708), (146, 557752), (173, 470704), (208, 391499), (248, 328354), (292, 278876), (346, 235352), (403, 202064), (496, 164177), (584, 139438), (692, 117676), (806, 101032), (949, 85808), (1168, 69719), (1384, 58838), (1612, 50516), (1898, 42904), (2249, 36208), (2263, 35984), (2768, 29419), (3224, 25258), (3796, 21452), (4498, 18104), (4526, 17992), (5363, 15184), (6448, 12629), (7592, 10726), (8996, 9052)]