31990760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25799}}^1$

素因数の和:25841

約数の個数: 32

約数和(自身を含む): 74304000

約数和(自身を除く): 42313240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25799, 51598, 103196, 128995, 206392, 257990, 515980, 799769, 1031960, 1599538, 3199076, 3998845, 6398152, 7997690, 15995380, 31990760]

約数ペア:

[(1, 31990760), (2, 15995380), (4, 7997690), (5, 6398152), (8, 3998845), (10, 3199076), (20, 1599538), (31, 1031960), (40, 799769), (62, 515980), (124, 257990), (155, 206392), (248, 128995), (310, 103196), (620, 51598), (1240, 25799)]