28447020

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{211}}^1$

素因数の和:340

約数の個数: 144

約数和(自身を含む): 100009728

約数和(自身を除く): 71562708

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 107, 126, 140, 180, 210, 211, 214, 252, 315, 321, 420, 422, 428, 535, 630, 633, 642, 749, 844, 963, 1055, 1070, 1260, 1266, 1284, 1477, 1498, 1605, 1899, 1926, 2110, 2140, 2247, 2532, 2954, 2996, 3165, 3210, 3745, 3798, 3852, 4220, 4431, 4494, 4815, 5908, 6330, 6420, 6741, 7385, 7490, 7596, 8862, 8988, 9495, 9630, 11235, 12660, 13293, 13482, 14770, 14980, 17724, 18990, 19260, 22155, 22470, 22577, 26586, 26964, 29540, 33705, 37980, 44310, 44940, 45154, 53172, 66465, 67410, 67731, 88620, 90308, 112885, 132930, 134820, 135462, 158039, 203193, 225770, 265860, 270924, 316078, 338655, 406386, 451540, 474117, 632156, 677310, 790195, 812772, 948234, 1015965, 1354620, 1422351, 1580390, 1896468, 2031930, 2370585, 2844702, 3160780, 4063860, 4741170, 5689404, 7111755, 9482340, 14223510, 28447020]

約数ペア:

[(1, 28447020), (2, 14223510), (3, 9482340), (4, 7111755), (5, 5689404), (6, 4741170), (7, 4063860), (9, 3160780), (10, 2844702), (12, 2370585), (14, 2031930), (15, 1896468), (18, 1580390), (20, 1422351), (21, 1354620), (28, 1015965), (30, 948234), (35, 812772), (36, 790195), (42, 677310), (45, 632156), (60, 474117), (63, 451540), (70, 406386), (84, 338655), (90, 316078), (105, 270924), (107, 265860), (126, 225770), (140, 203193), (180, 158039), (210, 135462), (211, 134820), (214, 132930), (252, 112885), (315, 90308), (321, 88620), (420, 67731), (422, 67410), (428, 66465), (535, 53172), (630, 45154), (633, 44940), (642, 44310), (749, 37980), (844, 33705), (963, 29540), (1055, 26964), (1070, 26586), (1260, 22577), (1266, 22470), (1284, 22155), (1477, 19260), (1498, 18990), (1605, 17724), (1899, 14980), (1926, 14770), (2110, 13482), (2140, 13293), (2247, 12660), (2532, 11235), (2954, 9630), (2996, 9495), (3165, 8988), (3210, 8862), (3745, 7596), (3798, 7490), (3852, 7385), (4220, 6741), (4431, 6420), (4494, 6330), (4815, 5908)]