81777420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{19753}}^1$

素因数の和:19791

約数の個数: 72

約数和(自身を含む): 258856416

約数和(自身を除く): 177078996

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 19753, 39506, 59259, 79012, 98765, 118518, 177777, 197530, 237036, 296295, 355554, 395060, 454319, 592590, 711108, 888885, 908638, 1185180, 1362957, 1777770, 1817276, 2271595, 2725914, 3555540, 4088871, 4543190, 5451828, 6814785, 8177742, 9086380, 13629570, 16355484, 20444355, 27259140, 40888710, 81777420]

約数ペア:

[(1, 81777420), (2, 40888710), (3, 27259140), (4, 20444355), (5, 16355484), (6, 13629570), (9, 9086380), (10, 8177742), (12, 6814785), (15, 5451828), (18, 4543190), (20, 4088871), (23, 3555540), (30, 2725914), (36, 2271595), (45, 1817276), (46, 1777770), (60, 1362957), (69, 1185180), (90, 908638), (92, 888885), (115, 711108), (138, 592590), (180, 454319), (207, 395060), (230, 355554), (276, 296295), (345, 237036), (414, 197530), (460, 177777), (690, 118518), (828, 98765), (1035, 79012), (1380, 59259), (2070, 39506), (4140, 19753)]