18019120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1399}}^1$

素因数の和:1442

約数の個数: 80

約数和(自身を含む): 49996800

約数和(自身を除く): 31977680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1399, 1610, 1840, 2576, 2798, 3220, 5596, 6440, 6995, 9793, 11192, 12880, 13990, 19586, 22384, 27980, 32177, 39172, 48965, 55960, 64354, 78344, 97930, 111920, 128708, 156688, 160885, 195860, 225239, 257416, 321770, 391720, 450478, 514832, 643540, 783440, 900956, 1126195, 1287080, 1801912, 2252390, 2574160, 3603824, 4504780, 9009560, 18019120]

約数ペア:

[(1, 18019120), (2, 9009560), (4, 4504780), (5, 3603824), (7, 2574160), (8, 2252390), (10, 1801912), (14, 1287080), (16, 1126195), (20, 900956), (23, 783440), (28, 643540), (35, 514832), (40, 450478), (46, 391720), (56, 321770), (70, 257416), (80, 225239), (92, 195860), (112, 160885), (115, 156688), (140, 128708), (161, 111920), (184, 97930), (230, 78344), (280, 64354), (322, 55960), (368, 48965), (460, 39172), (560, 32177), (644, 27980), (805, 22384), (920, 19586), (1288, 13990), (1399, 12880), (1610, 11192), (1840, 9793), (2576, 6995), (2798, 6440), (3220, 5596)]