1980694660

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{288731}}^1$

素因数の和:288761

約数の個数: 48

約数和(自身を含む): 4850697600

約数和(自身を除く): 2870002940

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 343, 490, 686, 980, 1372, 1715, 3430, 6860, 288731, 577462, 1154924, 1443655, 2021117, 2887310, 4042234, 5774620, 8084468, 10105585, 14147819, 20211170, 28295638, 40422340, 56591276, 70739095, 99034733, 141478190, 198069466, 282956380, 396138932, 495173665, 990347330, 1980694660]

約数ペア:

[(1, 1980694660), (2, 990347330), (4, 495173665), (5, 396138932), (7, 282956380), (10, 198069466), (14, 141478190), (20, 99034733), (28, 70739095), (35, 56591276), (49, 40422340), (70, 28295638), (98, 20211170), (140, 14147819), (196, 10105585), (245, 8084468), (343, 5774620), (490, 4042234), (686, 2887310), (980, 2021117), (1372, 1443655), (1715, 1154924), (3430, 577462), (6860, 288731)]