81560440

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2341}}^1$

素因数の和:2432

約数の個数: 64

約数和(自身を含む): 200662560

約数和(自身を除く): 119102120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 67, 104, 130, 134, 260, 268, 335, 520, 536, 670, 871, 1340, 1742, 2341, 2680, 3484, 4355, 4682, 6968, 8710, 9364, 11705, 17420, 18728, 23410, 30433, 34840, 46820, 60866, 93640, 121732, 152165, 156847, 243464, 304330, 313694, 608660, 627388, 784235, 1217320, 1254776, 1568470, 2039011, 3136940, 4078022, 6273880, 8156044, 10195055, 16312088, 20390110, 40780220, 81560440]

約数ペア:

[(1, 81560440), (2, 40780220), (4, 20390110), (5, 16312088), (8, 10195055), (10, 8156044), (13, 6273880), (20, 4078022), (26, 3136940), (40, 2039011), (52, 1568470), (65, 1254776), (67, 1217320), (104, 784235), (130, 627388), (134, 608660), (260, 313694), (268, 304330), (335, 243464), (520, 156847), (536, 152165), (670, 121732), (871, 93640), (1340, 60866), (1742, 46820), (2341, 34840), (2680, 30433), (3484, 23410), (4355, 18728), (4682, 17420), (6968, 11705), (8710, 9364)]