19445680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{7841}}^1$

素因数の和:7885

約数の個数: 40

約数和(自身を含む): 46675584

約数和(自身を除く): 27229904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 7841, 15682, 31364, 39205, 62728, 78410, 125456, 156820, 243071, 313640, 486142, 627280, 972284, 1215355, 1944568, 2430710, 3889136, 4861420, 9722840, 19445680]

約数ペア:

[(1, 19445680), (2, 9722840), (4, 4861420), (5, 3889136), (8, 2430710), (10, 1944568), (16, 1215355), (20, 972284), (31, 627280), (40, 486142), (62, 313640), (80, 243071), (124, 156820), (155, 125456), (248, 78410), (310, 62728), (496, 39205), (620, 31364), (1240, 15682), (2480, 7841)]