77782720

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7841}}^1$

素因数の和:7889

約数の個数: 56

約数和(自身を含む): 191219328

約数和(自身を除く): 113436608

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 7841, 9920, 15682, 31364, 39205, 62728, 78410, 125456, 156820, 243071, 250912, 313640, 486142, 501824, 627280, 972284, 1215355, 1254560, 1944568, 2430710, 2509120, 3889136, 4861420, 7778272, 9722840, 15556544, 19445680, 38891360, 77782720]

約数ペア:

[(1, 77782720), (2, 38891360), (4, 19445680), (5, 15556544), (8, 9722840), (10, 7778272), (16, 4861420), (20, 3889136), (31, 2509120), (32, 2430710), (40, 1944568), (62, 1254560), (64, 1215355), (80, 972284), (124, 627280), (155, 501824), (160, 486142), (248, 313640), (310, 250912), (320, 243071), (496, 156820), (620, 125456), (992, 78410), (1240, 62728), (1984, 39205), (2480, 31364), (4960, 15682), (7841, 9920)]