21091356

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{241}}^1$

素因数の和:292

約数の個数: 144

約数和(自身を含む): 66594528

約数和(自身を除く): 45503172

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 13, 17, 18, 22, 26, 33, 34, 36, 39, 44, 51, 52, 66, 68, 78, 99, 102, 117, 132, 143, 153, 156, 187, 198, 204, 221, 234, 241, 286, 306, 374, 396, 429, 442, 468, 482, 561, 572, 612, 663, 723, 748, 858, 884, 964, 1122, 1287, 1326, 1446, 1683, 1716, 1989, 2169, 2244, 2431, 2574, 2651, 2652, 2892, 3133, 3366, 3978, 4097, 4338, 4862, 5148, 5302, 6266, 6732, 7293, 7953, 7956, 8194, 8676, 9399, 9724, 10604, 12291, 12532, 14586, 15906, 16388, 18798, 21879, 23859, 24582, 28197, 29172, 31812, 34463, 36873, 37596, 43758, 45067, 47718, 49164, 53261, 56394, 68926, 73746, 87516, 90134, 95436, 103389, 106522, 112788, 135201, 137852, 147492, 159783, 180268, 206778, 213044, 270402, 310167, 319566, 405603, 413556, 479349, 540804, 585871, 620334, 639132, 811206, 958698, 1171742, 1240668, 1622412, 1757613, 1917396, 2343484, 3515226, 5272839, 7030452, 10545678, 21091356]

約数ペア:

[(1, 21091356), (2, 10545678), (3, 7030452), (4, 5272839), (6, 3515226), (9, 2343484), (11, 1917396), (12, 1757613), (13, 1622412), (17, 1240668), (18, 1171742), (22, 958698), (26, 811206), (33, 639132), (34, 620334), (36, 585871), (39, 540804), (44, 479349), (51, 413556), (52, 405603), (66, 319566), (68, 310167), (78, 270402), (99, 213044), (102, 206778), (117, 180268), (132, 159783), (143, 147492), (153, 137852), (156, 135201), (187, 112788), (198, 106522), (204, 103389), (221, 95436), (234, 90134), (241, 87516), (286, 73746), (306, 68926), (374, 56394), (396, 53261), (429, 49164), (442, 47718), (468, 45067), (482, 43758), (561, 37596), (572, 36873), (612, 34463), (663, 31812), (723, 29172), (748, 28197), (858, 24582), (884, 23859), (964, 21879), (1122, 18798), (1287, 16388), (1326, 15906), (1446, 14586), (1683, 12532), (1716, 12291), (1989, 10604), (2169, 9724), (2244, 9399), (2431, 8676), (2574, 8194), (2651, 7956), (2652, 7953), (2892, 7293), (3133, 6732), (3366, 6266), (3978, 5302), (4097, 5148), (4338, 4862)]