81720380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{619}}^1$

素因数の和:699

約数の個数: 96

約数和(自身を含む): 209986560

約数和(自身を除く): 128266180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 41, 46, 70, 82, 92, 115, 140, 161, 164, 205, 230, 287, 322, 410, 460, 574, 619, 644, 805, 820, 943, 1148, 1238, 1435, 1610, 1886, 2476, 2870, 3095, 3220, 3772, 4333, 4715, 5740, 6190, 6601, 8666, 9430, 12380, 13202, 14237, 17332, 18860, 21665, 25379, 26404, 28474, 33005, 43330, 50758, 56948, 66010, 71185, 86660, 99659, 101516, 126895, 132020, 142370, 177653, 199318, 253790, 284740, 355306, 398636, 498295, 507580, 583717, 710612, 888265, 996590, 1167434, 1776530, 1993180, 2334868, 2918585, 3553060, 4086019, 5837170, 8172038, 11674340, 16344076, 20430095, 40860190, 81720380]

約数ペア:

[(1, 81720380), (2, 40860190), (4, 20430095), (5, 16344076), (7, 11674340), (10, 8172038), (14, 5837170), (20, 4086019), (23, 3553060), (28, 2918585), (35, 2334868), (41, 1993180), (46, 1776530), (70, 1167434), (82, 996590), (92, 888265), (115, 710612), (140, 583717), (161, 507580), (164, 498295), (205, 398636), (230, 355306), (287, 284740), (322, 253790), (410, 199318), (460, 177653), (574, 142370), (619, 132020), (644, 126895), (805, 101516), (820, 99659), (943, 86660), (1148, 71185), (1238, 66010), (1435, 56948), (1610, 50758), (1886, 43330), (2476, 33005), (2870, 28474), (3095, 26404), (3220, 25379), (3772, 21665), (4333, 18860), (4715, 17332), (5740, 14237), (6190, 13202), (6601, 12380), (8666, 9430)]