18135940

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1301}}^1$

素因数の和:1368

約数の個数: 48

約数和(自身を含む): 41341104

約数和(自身を除く): 23205164

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1301, 1394, 2602, 2788, 3485, 5204, 6505, 6970, 13010, 13940, 22117, 26020, 44234, 53341, 88468, 106682, 110585, 213364, 221170, 266705, 442340, 533410, 906797, 1066820, 1813594, 3627188, 4533985, 9067970, 18135940]

約数ペア:

[(1, 18135940), (2, 9067970), (4, 4533985), (5, 3627188), (10, 1813594), (17, 1066820), (20, 906797), (34, 533410), (41, 442340), (68, 266705), (82, 221170), (85, 213364), (164, 110585), (170, 106682), (205, 88468), (340, 53341), (410, 44234), (697, 26020), (820, 22117), (1301, 13940), (1394, 13010), (2602, 6970), (2788, 6505), (3485, 5204)]