821975

素因数分解:

$5^2\times 7^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1$

素因数の和:96

約数の個数: 36

約数和(自身を含む): 1314648

約数和(自身を除く): 492673

約数列:

[1, 5, 7, 11, 25, 35, 49, 55, 61, 77, 175, 245, 275, 305, 385, 427, 539, 671, 1225, 1525, 1925, 2135, 2695, 2989, 3355, 4697, 10675, 13475, 14945, 16775, 23485, 32879, 74725, 117425, 164395, 821975]

約数ペア:

[(1, 821975), (5, 164395), (7, 117425), (11, 74725), (25, 32879), (35, 23485), (49, 16775), (55, 14945), (61, 13475), (77, 10675), (175, 4697), (245, 3355), (275, 2989), (305, 2695), (385, 2135), (427, 1925), (539, 1525), (671, 1225)]