20697677

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1$

素因数の和:114

約数の個数: 64

約数和(自身を含む): 30965760

約数和(自身を除く): 10268083

約数列:

[1, 7, 11, 13, 23, 29, 31, 77, 91, 143, 161, 203, 217, 253, 299, 319, 341, 377, 403, 667, 713, 899, 1001, 1771, 2093, 2233, 2387, 2639, 2821, 3289, 4147, 4433, 4669, 4991, 6293, 7337, 7843, 8671, 9269, 9889, 11687, 20677, 23023, 29029, 31031, 51359, 54901, 60697, 64883, 69223, 81809, 95381, 101959, 128557, 144739, 227447, 268801, 667667, 713713, 899899, 1592129, 1881607, 2956811, 20697677]

約数ペア:

[(1, 20697677), (7, 2956811), (11, 1881607), (13, 1592129), (23, 899899), (29, 713713), (31, 667667), (77, 268801), (91, 227447), (143, 144739), (161, 128557), (203, 101959), (217, 95381), (253, 81809), (299, 69223), (319, 64883), (341, 60697), (377, 54901), (403, 51359), (667, 31031), (713, 29029), (899, 23023), (1001, 20677), (1771, 11687), (2093, 9889), (2233, 9269), (2387, 8671), (2639, 7843), (2821, 7337), (3289, 6293), (4147, 4991), (4433, 4669)]