20980278

素因数分解:

$2^1\times 3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1$

素因数の和:330

約数の個数: 96

約数和(自身を含む): 54991872

約数和(自身を除く): 34011594

約数列:

[1, 2, 3, 6, 9, 11, 17, 18, 22, 23, 33, 34, 46, 51, 66, 69, 99, 102, 138, 153, 187, 198, 207, 253, 271, 306, 374, 391, 414, 506, 542, 561, 759, 782, 813, 1122, 1173, 1518, 1626, 1683, 2277, 2346, 2439, 2981, 3366, 3519, 4301, 4554, 4607, 4878, 5962, 6233, 7038, 8602, 8943, 9214, 12466, 12903, 13821, 17886, 18699, 25806, 26829, 27642, 37398, 38709, 41463, 50677, 53658, 56097, 68563, 77418, 82926, 101354, 105961, 112194, 137126, 152031, 205689, 211922, 304062, 317883, 411378, 456093, 617067, 635766, 912186, 953649, 1165571, 1234134, 1907298, 2331142, 3496713, 6993426, 10490139, 20980278]

約数ペア:

[(1, 20980278), (2, 10490139), (3, 6993426), (6, 3496713), (9, 2331142), (11, 1907298), (17, 1234134), (18, 1165571), (22, 953649), (23, 912186), (33, 635766), (34, 617067), (46, 456093), (51, 411378), (66, 317883), (69, 304062), (99, 211922), (102, 205689), (138, 152031), (153, 137126), (187, 112194), (198, 105961), (207, 101354), (253, 82926), (271, 77418), (306, 68563), (374, 56097), (391, 53658), (414, 50677), (506, 41463), (542, 38709), (561, 37398), (759, 27642), (782, 26829), (813, 25806), (1122, 18699), (1173, 17886), (1518, 13821), (1626, 12903), (1683, 12466), (2277, 9214), (2346, 8943), (2439, 8602), (2981, 7038), (3366, 6233), (3519, 5962), (4301, 4878), (4554, 4607)]