2639780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{71}}^1$

素因数の和:117

約数の個数: 72

約数和(自身を含む): 6640704

約数和(自身を除く): 4000924

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 71, 110, 130, 142, 143, 169, 220, 260, 284, 286, 338, 355, 572, 676, 710, 715, 781, 845, 923, 1420, 1430, 1562, 1690, 1846, 1859, 2860, 3124, 3380, 3692, 3718, 3905, 4615, 7436, 7810, 9230, 9295, 10153, 11999, 15620, 18460, 18590, 20306, 23998, 37180, 40612, 47996, 50765, 59995, 101530, 119990, 131989, 203060, 239980, 263978, 527956, 659945, 1319890, 2639780]

約数ペア:

[(1, 2639780), (2, 1319890), (4, 659945), (5, 527956), (10, 263978), (11, 239980), (13, 203060), (20, 131989), (22, 119990), (26, 101530), (44, 59995), (52, 50765), (55, 47996), (65, 40612), (71, 37180), (110, 23998), (130, 20306), (142, 18590), (143, 18460), (169, 15620), (220, 11999), (260, 10153), (284, 9295), (286, 9230), (338, 7810), (355, 7436), (572, 4615), (676, 3905), (710, 3718), (715, 3692), (781, 3380), (845, 3124), (923, 2860), (1420, 1859), (1430, 1846), (1562, 1690)]