19970953197

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1277}}^1\times {\mathrm{2927}}^1$

素因数の和:4357

約数の個数: 32

約数和(自身を含む): 28918052352

約数和(自身を除く): 8947099155

約数列:

[1, 3, 13, 39, 137, 411, 1277, 1781, 2927, 3831, 5343, 8781, 16601, 38051, 49803, 114153, 174949, 400999, 524847, 1202997, 2274337, 3737779, 5212987, 6823011, 11213337, 15638961, 48591127, 145773381, 512075723, 1536227169, 6656984399, 19970953197]

約数ペア:

[(1, 19970953197), (3, 6656984399), (13, 1536227169), (39, 512075723), (137, 145773381), (411, 48591127), (1277, 15638961), (1781, 11213337), (2927, 6823011), (3831, 5212987), (5343, 3737779), (8781, 2274337), (16601, 1202997), (38051, 524847), (49803, 400999), (114153, 174949)]