19972043

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{101}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 25909632

約数和(自身を除く): 5937589

約数列:

[1, 7, 13, 41, 53, 91, 101, 287, 371, 533, 689, 707, 1313, 2173, 3731, 4141, 4823, 5353, 9191, 15211, 28249, 28987, 37471, 53833, 69589, 197743, 219473, 376831, 487123, 1536311, 2853149, 19972043]

約数ペア:

[(1, 19972043), (7, 2853149), (13, 1536311), (41, 487123), (53, 376831), (91, 219473), (101, 197743), (287, 69589), (371, 53833), (533, 37471), (689, 28987), (707, 28249), (1313, 15211), (2173, 9191), (3731, 5353), (4141, 4823)]