1821980140

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1\times {\mathrm{12413}}^1$

素因数の和:12642

約数の個数: 48

約数和(自身を含む): 3941693280

約数和(自身を除く): 2119713140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 179, 205, 358, 410, 716, 820, 895, 1790, 3580, 7339, 12413, 14678, 24826, 29356, 36695, 49652, 62065, 73390, 124130, 146780, 248260, 508933, 1017866, 2035732, 2221927, 2544665, 4443854, 5089330, 8887708, 10178660, 11109635, 22219270, 44438540, 91099007, 182198014, 364396028, 455495035, 910990070, 1821980140]

約数ペア:

[(1, 1821980140), (2, 910990070), (4, 455495035), (5, 364396028), (10, 182198014), (20, 91099007), (41, 44438540), (82, 22219270), (164, 11109635), (179, 10178660), (205, 8887708), (358, 5089330), (410, 4443854), (716, 2544665), (820, 2221927), (895, 2035732), (1790, 1017866), (3580, 508933), (7339, 248260), (12413, 146780), (14678, 124130), (24826, 73390), (29356, 62065), (36695, 49652)]