21286356

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:321

約数の個数: 96

約数和(自身を含む): 62055168

約数和(自身を除く): 40768812

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 52, 78, 84, 91, 101, 156, 182, 193, 202, 273, 303, 364, 386, 404, 546, 579, 606, 707, 772, 1092, 1158, 1212, 1313, 1351, 1414, 2121, 2316, 2509, 2626, 2702, 2828, 3939, 4053, 4242, 5018, 5252, 5404, 7527, 7878, 8106, 8484, 9191, 10036, 15054, 15756, 16212, 17563, 18382, 19493, 27573, 30108, 35126, 36764, 38986, 52689, 55146, 58479, 70252, 77972, 105378, 110292, 116958, 136451, 210756, 233916, 253409, 272902, 409353, 506818, 545804, 760227, 818706, 1013636, 1520454, 1637412, 1773863, 3040908, 3547726, 5321589, 7095452, 10643178, 21286356]

約数ペア:

[(1, 21286356), (2, 10643178), (3, 7095452), (4, 5321589), (6, 3547726), (7, 3040908), (12, 1773863), (13, 1637412), (14, 1520454), (21, 1013636), (26, 818706), (28, 760227), (39, 545804), (42, 506818), (52, 409353), (78, 272902), (84, 253409), (91, 233916), (101, 210756), (156, 136451), (182, 116958), (193, 110292), (202, 105378), (273, 77972), (303, 70252), (364, 58479), (386, 55146), (404, 52689), (546, 38986), (579, 36764), (606, 35126), (707, 30108), (772, 27573), (1092, 19493), (1158, 18382), (1212, 17563), (1313, 16212), (1351, 15756), (1414, 15054), (2121, 10036), (2316, 9191), (2509, 8484), (2626, 8106), (2702, 7878), (2828, 7527), (3939, 5404), (4053, 5252), (4242, 5018)]