20815956

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:190

約数の個数: 144

約数和(自身を含む): 65729664

約数和(自身を除く): 44913708

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 17, 18, 21, 28, 34, 36, 42, 43, 51, 63, 68, 84, 86, 102, 113, 119, 126, 129, 153, 172, 204, 226, 238, 252, 258, 301, 306, 339, 357, 387, 452, 476, 516, 602, 612, 678, 714, 731, 774, 791, 903, 1017, 1071, 1204, 1356, 1428, 1462, 1548, 1582, 1806, 1921, 2034, 2142, 2193, 2373, 2709, 2924, 3164, 3612, 3842, 4068, 4284, 4386, 4746, 4859, 5117, 5418, 5763, 6579, 7119, 7684, 8772, 9492, 9718, 10234, 10836, 11526, 13158, 13447, 14238, 14577, 15351, 17289, 19436, 20468, 23052, 26316, 26894, 28476, 29154, 30702, 34013, 34578, 40341, 43731, 46053, 53788, 58308, 61404, 68026, 69156, 80682, 82603, 87462, 92106, 102039, 121023, 136052, 161364, 165206, 174924, 184212, 204078, 242046, 247809, 306117, 330412, 408156, 484092, 495618, 578221, 612234, 743427, 991236, 1156442, 1224468, 1486854, 1734663, 2312884, 2973708, 3469326, 5203989, 6938652, 10407978, 20815956]

約数ペア:

[(1, 20815956), (2, 10407978), (3, 6938652), (4, 5203989), (6, 3469326), (7, 2973708), (9, 2312884), (12, 1734663), (14, 1486854), (17, 1224468), (18, 1156442), (21, 991236), (28, 743427), (34, 612234), (36, 578221), (42, 495618), (43, 484092), (51, 408156), (63, 330412), (68, 306117), (84, 247809), (86, 242046), (102, 204078), (113, 184212), (119, 174924), (126, 165206), (129, 161364), (153, 136052), (172, 121023), (204, 102039), (226, 92106), (238, 87462), (252, 82603), (258, 80682), (301, 69156), (306, 68026), (339, 61404), (357, 58308), (387, 53788), (452, 46053), (476, 43731), (516, 40341), (602, 34578), (612, 34013), (678, 30702), (714, 29154), (731, 28476), (774, 26894), (791, 26316), (903, 23052), (1017, 20468), (1071, 19436), (1204, 17289), (1356, 15351), (1428, 14577), (1462, 14238), (1548, 13447), (1582, 13158), (1806, 11526), (1921, 10836), (2034, 10234), (2142, 9718), (2193, 9492), (2373, 8772), (2709, 7684), (2924, 7119), (3164, 6579), (3612, 5763), (3842, 5418), (4068, 5117), (4284, 4859), (4386, 4746)]