20133855

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{397}}^1$

素因数の和:445

約数の個数: 72

約数和(自身を含む): 42468192

約数和(自身を除く): 22334337

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 49, 63, 69, 105, 115, 147, 161, 207, 245, 315, 345, 397, 441, 483, 735, 805, 1035, 1127, 1191, 1449, 1985, 2205, 2415, 2779, 3381, 3573, 5635, 5955, 7245, 8337, 9131, 10143, 13895, 16905, 17865, 19453, 25011, 27393, 41685, 45655, 50715, 58359, 63917, 82179, 97265, 125055, 136965, 175077, 191751, 291795, 319585, 410895, 447419, 575253, 875385, 958755, 1342257, 2237095, 2876265, 4026771, 6711285, 20133855]

約数ペア:

[(1, 20133855), (3, 6711285), (5, 4026771), (7, 2876265), (9, 2237095), (15, 1342257), (21, 958755), (23, 875385), (35, 575253), (45, 447419), (49, 410895), (63, 319585), (69, 291795), (105, 191751), (115, 175077), (147, 136965), (161, 125055), (207, 97265), (245, 82179), (315, 63917), (345, 58359), (397, 50715), (441, 45655), (483, 41685), (735, 27393), (805, 25011), (1035, 19453), (1127, 17865), (1191, 16905), (1449, 13895), (1985, 10143), (2205, 9131), (2415, 8337), (2779, 7245), (3381, 5955), (3573, 5635)]