19742961

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{241}}^1$

素因数の和:381

約数の個数: 32

約数和(自身を含む): 31223808

約数和(自身を除く): 11480847

約数列:

[1, 3, 7, 21, 47, 83, 141, 241, 249, 329, 581, 723, 987, 1687, 1743, 3901, 5061, 11327, 11703, 20003, 27307, 33981, 60009, 79289, 81921, 140021, 237867, 420063, 940141, 2820423, 6580987, 19742961]

約数ペア:

[(1, 19742961), (3, 6580987), (7, 2820423), (21, 940141), (47, 420063), (83, 237867), (141, 140021), (241, 81921), (249, 79289), (329, 60009), (581, 33981), (723, 27307), (987, 20003), (1687, 11703), (1743, 11327), (3901, 5061)]