820800045

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{37}}^1\times {\mathrm{2917}}^1$

素因数の和:2991

約数の個数: 72

約数和(自身を含む): 1582758216

約数和(自身を除く): 761958171

約数列:

[1, 3, 5, 9, 13, 15, 37, 39, 45, 65, 111, 117, 169, 185, 195, 333, 481, 507, 555, 585, 845, 1443, 1521, 1665, 2405, 2535, 2917, 4329, 6253, 7215, 7605, 8751, 14585, 18759, 21645, 26253, 31265, 37921, 43755, 56277, 93795, 107929, 113763, 131265, 189605, 281385, 323787, 341289, 492973, 539645, 568815, 971361, 1403077, 1478919, 1618935, 1706445, 2464865, 4209231, 4436757, 4856805, 7015385, 7394595, 12627693, 18240001, 21046155, 22183785, 54720003, 63138465, 91200005, 164160009, 273600015, 820800045]

約数ペア:

[(1, 820800045), (3, 273600015), (5, 164160009), (9, 91200005), (13, 63138465), (15, 54720003), (37, 22183785), (39, 21046155), (45, 18240001), (65, 12627693), (111, 7394595), (117, 7015385), (169, 4856805), (185, 4436757), (195, 4209231), (333, 2464865), (481, 1706445), (507, 1618935), (555, 1478919), (585, 1403077), (845, 971361), (1443, 568815), (1521, 539645), (1665, 492973), (2405, 341289), (2535, 323787), (2917, 281385), (4329, 189605), (6253, 131265), (7215, 113763), (7605, 107929), (8751, 93795), (14585, 56277), (18759, 43755), (21645, 37921), (26253, 31265)]