20805124515

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{75541}}^1$

素因数の和:75660

約数の個数: 64

約数和(自身を含む): 39567086592

約数和(自身を除く): 18761962077

約数列:

[1, 3, 5, 7, 15, 21, 35, 43, 61, 105, 129, 183, 215, 301, 305, 427, 645, 903, 915, 1281, 1505, 2135, 2623, 4515, 6405, 7869, 13115, 18361, 39345, 55083, 75541, 91805, 226623, 275415, 377705, 528787, 1133115, 1586361, 2643935, 3248263, 4608001, 7931805, 9744789, 13824003, 16241315, 22737841, 23040005, 32256007, 48723945, 68213523, 69120015, 96768021, 113689205, 161280035, 198144043, 341067615, 483840105, 594432129, 990720215, 1387008301, 2972160645, 4161024903, 6935041505, 20805124515]

約数ペア:

[(1, 20805124515), (3, 6935041505), (5, 4161024903), (7, 2972160645), (15, 1387008301), (21, 990720215), (35, 594432129), (43, 483840105), (61, 341067615), (105, 198144043), (129, 161280035), (183, 113689205), (215, 96768021), (301, 69120015), (305, 68213523), (427, 48723945), (645, 32256007), (903, 23040005), (915, 22737841), (1281, 16241315), (1505, 13824003), (2135, 9744789), (2623, 7931805), (4515, 4608001), (6405, 3248263), (7869, 2643935), (13115, 1586361), (18361, 1133115), (39345, 528787), (55083, 377705), (75541, 275415), (91805, 226623)]