81440240

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6323}}^1$

素因数の和:6366

約数の個数: 80

約数和(自身を含む): 225842688

約数和(自身を除く): 144402448

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, 1610, 1840, 2576, 3220, 6323, 6440, 12646, 12880, 25292, 31615, 44261, 50584, 63230, 88522, 101168, 126460, 145429, 177044, 221305, 252920, 290858, 354088, 442610, 505840, 581716, 708176, 727145, 885220, 1018003, 1163432, 1454290, 1770440, 2036006, 2326864, 2908580, 3540880, 4072012, 5090015, 5817160, 8144024, 10180030, 11634320, 16288048, 20360060, 40720120, 81440240]

約数ペア:

[(1, 81440240), (2, 40720120), (4, 20360060), (5, 16288048), (7, 11634320), (8, 10180030), (10, 8144024), (14, 5817160), (16, 5090015), (20, 4072012), (23, 3540880), (28, 2908580), (35, 2326864), (40, 2036006), (46, 1770440), (56, 1454290), (70, 1163432), (80, 1018003), (92, 885220), (112, 727145), (115, 708176), (140, 581716), (161, 505840), (184, 442610), (230, 354088), (280, 290858), (322, 252920), (368, 221305), (460, 177044), (560, 145429), (644, 126460), (805, 101168), (920, 88522), (1288, 63230), (1610, 50584), (1840, 44261), (2576, 31615), (3220, 25292), (6323, 12880), (6440, 12646)]