69721659

素因数分解:

$3^2\times 7^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:249

約数の個数: 72

約数和(自身を含む): 126444240

約数和(自身を除く): 56722581

約数列:

[1, 3, 7, 9, 19, 21, 49, 53, 57, 63, 133, 147, 157, 159, 171, 371, 399, 441, 471, 477, 931, 1007, 1099, 1113, 1197, 1413, 2597, 2793, 2983, 3021, 3297, 3339, 7049, 7693, 7791, 8321, 8379, 8949, 9063, 9891, 20881, 21147, 23079, 23373, 24963, 26847, 49343, 58247, 62643, 63441, 69237, 74889, 146167, 148029, 158099, 174741, 187929, 407729, 438501, 444087, 474297, 524223, 1106693, 1223187, 1315503, 1422891, 3320079, 3669561, 7746851, 9960237, 23240553, 69721659]

約数ペア:

[(1, 69721659), (3, 23240553), (7, 9960237), (9, 7746851), (19, 3669561), (21, 3320079), (49, 1422891), (53, 1315503), (57, 1223187), (63, 1106693), (133, 524223), (147, 474297), (157, 444087), (159, 438501), (171, 407729), (371, 187929), (399, 174741), (441, 158099), (471, 148029), (477, 146167), (931, 74889), (1007, 69237), (1099, 63441), (1113, 62643), (1197, 58247), (1413, 49343), (2597, 26847), (2793, 24963), (2983, 23373), (3021, 23079), (3297, 21147), (3339, 20881), (7049, 9891), (7693, 9063), (7791, 8949), (8321, 8379)]