28000908

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:156

約数の個数: 144

約数和(自身を含む): 83166720

約数和(自身を除く): 55165812

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 19, 26, 36, 38, 39, 47, 52, 57, 67, 76, 78, 94, 114, 117, 134, 141, 156, 171, 188, 201, 228, 234, 247, 268, 282, 342, 402, 423, 468, 494, 564, 603, 611, 684, 741, 804, 846, 871, 893, 988, 1206, 1222, 1273, 1482, 1692, 1742, 1786, 1833, 2223, 2412, 2444, 2546, 2613, 2679, 2964, 3149, 3484, 3572, 3666, 3819, 4446, 5092, 5226, 5358, 5499, 6298, 7332, 7638, 7839, 8037, 8892, 9447, 10452, 10716, 10998, 11457, 11609, 12596, 15276, 15678, 16074, 16549, 18894, 21996, 22914, 23218, 28341, 31356, 32148, 33098, 34827, 37788, 40937, 45828, 46436, 49647, 56682, 59831, 66196, 69654, 81874, 99294, 104481, 113364, 119662, 122811, 139308, 148941, 163748, 179493, 198588, 208962, 239324, 245622, 297882, 358986, 368433, 417924, 491244, 538479, 595764, 717972, 736866, 777803, 1076958, 1473732, 1555606, 2153916, 2333409, 3111212, 4666818, 7000227, 9333636, 14000454, 28000908]

約数ペア:

[(1, 28000908), (2, 14000454), (3, 9333636), (4, 7000227), (6, 4666818), (9, 3111212), (12, 2333409), (13, 2153916), (18, 1555606), (19, 1473732), (26, 1076958), (36, 777803), (38, 736866), (39, 717972), (47, 595764), (52, 538479), (57, 491244), (67, 417924), (76, 368433), (78, 358986), (94, 297882), (114, 245622), (117, 239324), (134, 208962), (141, 198588), (156, 179493), (171, 163748), (188, 148941), (201, 139308), (228, 122811), (234, 119662), (247, 113364), (268, 104481), (282, 99294), (342, 81874), (402, 69654), (423, 66196), (468, 59831), (494, 56682), (564, 49647), (603, 46436), (611, 45828), (684, 40937), (741, 37788), (804, 34827), (846, 33098), (871, 32148), (893, 31356), (988, 28341), (1206, 23218), (1222, 22914), (1273, 21996), (1482, 18894), (1692, 16549), (1742, 16074), (1786, 15678), (1833, 15276), (2223, 12596), (2412, 11609), (2444, 11457), (2546, 10998), (2613, 10716), (2679, 10452), (2964, 9447), (3149, 8892), (3484, 8037), (3572, 7839), (3666, 7638), (3819, 7332), (4446, 6298), (5092, 5499), (5226, 5358)]