20805778

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{541}}^1$

素因数の和:658

約数の個数: 32

約数和(自身を含む): 37150848

約数和(自身を除く): 16345070

約数列:

[1, 2, 7, 14, 41, 67, 82, 134, 287, 469, 541, 574, 938, 1082, 2747, 3787, 5494, 7574, 19229, 22181, 36247, 38458, 44362, 72494, 155267, 253729, 310534, 507458, 1486127, 2972254, 10402889, 20805778]

約数ペア:

[(1, 20805778), (2, 10402889), (7, 2972254), (14, 1486127), (41, 507458), (67, 310534), (82, 253729), (134, 155267), (287, 72494), (469, 44362), (541, 38458), (574, 36247), (938, 22181), (1082, 19229), (2747, 7574), (3787, 5494)]