31931240

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2341}}^1$

素因数の和:2394

約数の個数: 64

約数和(自身を含む): 80939520

約数和(自身を除く): 49008280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 1240, 1364, 1705, 2341, 2728, 3410, 4682, 6820, 9364, 11705, 13640, 18728, 23410, 25751, 46820, 51502, 72571, 93640, 103004, 128755, 145142, 206008, 257510, 290284, 362855, 515020, 580568, 725710, 798281, 1030040, 1451420, 1596562, 2902840, 3193124, 3991405, 6386248, 7982810, 15965620, 31931240]

約数ペア:

[(1, 31931240), (2, 15965620), (4, 7982810), (5, 6386248), (8, 3991405), (10, 3193124), (11, 2902840), (20, 1596562), (22, 1451420), (31, 1030040), (40, 798281), (44, 725710), (55, 580568), (62, 515020), (88, 362855), (110, 290284), (124, 257510), (155, 206008), (220, 145142), (248, 128755), (310, 103004), (341, 93640), (440, 72571), (620, 51502), (682, 46820), (1240, 25751), (1364, 23410), (1705, 18728), (2341, 13640), (2728, 11705), (3410, 9364), (4682, 6820)]