213989715

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{193}}^1$

素因数の和:441

約数の個数: 64

約数和(自身を含む): 393338880

約数和(自身を除く): 179349165

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 191, 193, 215, 387, 573, 579, 645, 955, 965, 1161, 1719, 1737, 1935, 2865, 2895, 5157, 5211, 5805, 8213, 8299, 8595, 8685, 24639, 24897, 25785, 26055, 36863, 41065, 41495, 73917, 74691, 110589, 123195, 124485, 184315, 221751, 224073, 331767, 369585, 373455, 552945, 995301, 1108755, 1120365, 1585109, 1658835, 4755327, 4976505, 7925545, 14265981, 23776635, 42797943, 71329905, 213989715]

約数ペア:

[(1, 213989715), (3, 71329905), (5, 42797943), (9, 23776635), (15, 14265981), (27, 7925545), (43, 4976505), (45, 4755327), (129, 1658835), (135, 1585109), (191, 1120365), (193, 1108755), (215, 995301), (387, 552945), (573, 373455), (579, 369585), (645, 331767), (955, 224073), (965, 221751), (1161, 184315), (1719, 124485), (1737, 123195), (1935, 110589), (2865, 74691), (2895, 73917), (5157, 41495), (5211, 41065), (5805, 36863), (8213, 26055), (8299, 25785), (8595, 24897), (8685, 24639)]