19909708

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{659}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 43464960

約数和(自身を除く): 23555252

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 83, 91, 166, 182, 332, 364, 581, 659, 1079, 1162, 1318, 2158, 2324, 2636, 4316, 4613, 7553, 8567, 9226, 15106, 17134, 18452, 30212, 34268, 54697, 59969, 109394, 119938, 218788, 239876, 382879, 711061, 765758, 1422122, 1531516, 2844244, 4977427, 9954854, 19909708]

約数ペア:

[(1, 19909708), (2, 9954854), (4, 4977427), (7, 2844244), (13, 1531516), (14, 1422122), (26, 765758), (28, 711061), (52, 382879), (83, 239876), (91, 218788), (166, 119938), (182, 109394), (332, 59969), (364, 54697), (581, 34268), (659, 30212), (1079, 18452), (1162, 17134), (1318, 15106), (2158, 9226), (2324, 8567), (2636, 7553), (4316, 4613)]