66604040

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:506

約数の個数: 64

約数和(自身を含む): 154839600

約数和(自身を除く): 88235560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 89, 106, 178, 212, 265, 353, 356, 424, 445, 530, 706, 712, 890, 1060, 1412, 1765, 1780, 2120, 2824, 3530, 3560, 4717, 7060, 9434, 14120, 18709, 18868, 23585, 31417, 37418, 37736, 47170, 62834, 74836, 93545, 94340, 125668, 149672, 157085, 187090, 188680, 251336, 314170, 374180, 628340, 748360, 1256680, 1665101, 3330202, 6660404, 8325505, 13320808, 16651010, 33302020, 66604040]

約数ペア:

[(1, 66604040), (2, 33302020), (4, 16651010), (5, 13320808), (8, 8325505), (10, 6660404), (20, 3330202), (40, 1665101), (53, 1256680), (89, 748360), (106, 628340), (178, 374180), (212, 314170), (265, 251336), (353, 188680), (356, 187090), (424, 157085), (445, 149672), (530, 125668), (706, 94340), (712, 93545), (890, 74836), (1060, 62834), (1412, 47170), (1765, 37736), (1780, 37418), (2120, 31417), (2824, 23585), (3530, 18868), (3560, 18709), (4717, 14120), (7060, 9434)]