21956220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{853}}^1$

素因数の和:892

約数の個数: 144

約数和(自身を含む): 78335712

約数和(自身を除く): 56379492

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 26, 30, 33, 36, 39, 44, 45, 52, 55, 60, 65, 66, 78, 90, 99, 110, 117, 130, 132, 143, 156, 165, 180, 195, 198, 220, 234, 260, 286, 330, 390, 396, 429, 468, 495, 572, 585, 660, 715, 780, 853, 858, 990, 1170, 1287, 1430, 1706, 1716, 1980, 2145, 2340, 2559, 2574, 2860, 3412, 4265, 4290, 5118, 5148, 6435, 7677, 8530, 8580, 9383, 10236, 11089, 12795, 12870, 15354, 17060, 18766, 22178, 25590, 25740, 28149, 30708, 33267, 37532, 38385, 44356, 46915, 51180, 55445, 56298, 66534, 76770, 84447, 93830, 99801, 110890, 112596, 121979, 133068, 140745, 153540, 166335, 168894, 187660, 199602, 221780, 243958, 281490, 332670, 337788, 365937, 399204, 422235, 487916, 499005, 562980, 609895, 665340, 731874, 844470, 998010, 1097811, 1219790, 1463748, 1688940, 1829685, 1996020, 2195622, 2439580, 3659370, 4391244, 5489055, 7318740, 10978110, 21956220]

約数ペア:

[(1, 21956220), (2, 10978110), (3, 7318740), (4, 5489055), (5, 4391244), (6, 3659370), (9, 2439580), (10, 2195622), (11, 1996020), (12, 1829685), (13, 1688940), (15, 1463748), (18, 1219790), (20, 1097811), (22, 998010), (26, 844470), (30, 731874), (33, 665340), (36, 609895), (39, 562980), (44, 499005), (45, 487916), (52, 422235), (55, 399204), (60, 365937), (65, 337788), (66, 332670), (78, 281490), (90, 243958), (99, 221780), (110, 199602), (117, 187660), (130, 168894), (132, 166335), (143, 153540), (156, 140745), (165, 133068), (180, 121979), (195, 112596), (198, 110890), (220, 99801), (234, 93830), (260, 84447), (286, 76770), (330, 66534), (390, 56298), (396, 55445), (429, 51180), (468, 46915), (495, 44356), (572, 38385), (585, 37532), (660, 33267), (715, 30708), (780, 28149), (853, 25740), (858, 25590), (990, 22178), (1170, 18766), (1287, 17060), (1430, 15354), (1706, 12870), (1716, 12795), (1980, 11089), (2145, 10236), (2340, 9383), (2559, 8580), (2574, 8530), (2860, 7677), (3412, 6435), (4265, 5148), (4290, 5118)]