28231840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{277}}^1$

素因数の和:319

約数の個数: 144

約数和(自身を含む): 83857032

約数和(自身を除く): 55625192

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 32, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 160, 182, 196, 208, 224, 245, 260, 277, 280, 364, 392, 416, 455, 490, 520, 554, 560, 637, 728, 784, 910, 980, 1040, 1108, 1120, 1274, 1385, 1456, 1568, 1820, 1939, 1960, 2080, 2216, 2548, 2770, 2912, 3185, 3601, 3640, 3878, 3920, 4432, 5096, 5540, 6370, 7202, 7280, 7756, 7840, 8864, 9695, 10192, 11080, 12740, 13573, 14404, 14560, 15512, 18005, 19390, 20384, 22160, 25207, 25480, 27146, 28808, 31024, 36010, 38780, 44320, 50414, 50960, 54292, 57616, 62048, 67865, 72020, 77560, 100828, 101920, 108584, 115232, 126035, 135730, 144040, 155120, 176449, 201656, 217168, 252070, 271460, 288080, 310240, 352898, 403312, 434336, 504140, 542920, 576160, 705796, 806624, 882245, 1008280, 1085840, 1411592, 1764490, 2016560, 2171680, 2823184, 3528980, 4033120, 5646368, 7057960, 14115920, 28231840]

約数ペア:

[(1, 28231840), (2, 14115920), (4, 7057960), (5, 5646368), (7, 4033120), (8, 3528980), (10, 2823184), (13, 2171680), (14, 2016560), (16, 1764490), (20, 1411592), (26, 1085840), (28, 1008280), (32, 882245), (35, 806624), (40, 705796), (49, 576160), (52, 542920), (56, 504140), (65, 434336), (70, 403312), (80, 352898), (91, 310240), (98, 288080), (104, 271460), (112, 252070), (130, 217168), (140, 201656), (160, 176449), (182, 155120), (196, 144040), (208, 135730), (224, 126035), (245, 115232), (260, 108584), (277, 101920), (280, 100828), (364, 77560), (392, 72020), (416, 67865), (455, 62048), (490, 57616), (520, 54292), (554, 50960), (560, 50414), (637, 44320), (728, 38780), (784, 36010), (910, 31024), (980, 28808), (1040, 27146), (1108, 25480), (1120, 25207), (1274, 22160), (1385, 20384), (1456, 19390), (1568, 18005), (1820, 15512), (1939, 14560), (1960, 14404), (2080, 13573), (2216, 12740), (2548, 11080), (2770, 10192), (2912, 9695), (3185, 8864), (3601, 7840), (3640, 7756), (3878, 7280), (3920, 7202), (4432, 6370), (5096, 5540)]