20128022505

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{157}}^1\times {\mathrm{4007}}^1$

素因数の和:4260

約数の個数: 80

約数和(自身を含む): 36779973120

約数和(自身を除く): 16651950615

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 157, 237, 395, 405, 471, 711, 785, 1185, 1413, 2133, 2355, 3555, 4007, 4239, 6399, 7065, 10665, 12021, 12403, 12717, 20035, 21195, 31995, 36063, 37209, 60105, 62015, 63585, 108189, 111627, 180315, 186045, 316553, 324567, 334881, 540945, 558135, 629099, 949659, 1004643, 1582765, 1622835, 1674405, 1887297, 2848977, 3145495, 4748295, 5023215, 5661891, 8546931, 9436485, 14244885, 16985673, 25640793, 28309455, 42734655, 49698821, 50957019, 84928365, 128203965, 149096463, 248494105, 254785095, 447289389, 745482315, 1341868167, 2236446945, 4025604501, 6709340835, 20128022505]

約数ペア:

[(1, 20128022505), (3, 6709340835), (5, 4025604501), (9, 2236446945), (15, 1341868167), (27, 745482315), (45, 447289389), (79, 254785095), (81, 248494105), (135, 149096463), (157, 128203965), (237, 84928365), (395, 50957019), (405, 49698821), (471, 42734655), (711, 28309455), (785, 25640793), (1185, 16985673), (1413, 14244885), (2133, 9436485), (2355, 8546931), (3555, 5661891), (4007, 5023215), (4239, 4748295), (6399, 3145495), (7065, 2848977), (10665, 1887297), (12021, 1674405), (12403, 1622835), (12717, 1582765), (20035, 1004643), (21195, 949659), (31995, 629099), (36063, 558135), (37209, 540945), (60105, 334881), (62015, 324567), (63585, 316553), (108189, 186045), (111627, 180315)]