81941040

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1559}}^1$

素因数の和:1651

約数の個数: 120

約数和(自身を含む): 279133920

約数和(自身を除く): 197192880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 73, 80, 90, 120, 144, 146, 180, 219, 240, 292, 360, 365, 438, 584, 657, 720, 730, 876, 1095, 1168, 1314, 1460, 1559, 1752, 2190, 2628, 2920, 3118, 3285, 3504, 4380, 4677, 5256, 5840, 6236, 6570, 7795, 8760, 9354, 10512, 12472, 13140, 14031, 15590, 17520, 18708, 23385, 24944, 26280, 28062, 31180, 37416, 46770, 52560, 56124, 62360, 70155, 74832, 93540, 112248, 113807, 124720, 140310, 187080, 224496, 227614, 280620, 341421, 374160, 455228, 561240, 569035, 682842, 910456, 1024263, 1122480, 1138070, 1365684, 1707105, 1820912, 2048526, 2276140, 2731368, 3414210, 4097052, 4552280, 5121315, 5462736, 6828420, 8194104, 9104560, 10242630, 13656840, 16388208, 20485260, 27313680, 40970520, 81941040]

約数ペア:

[(1, 81941040), (2, 40970520), (3, 27313680), (4, 20485260), (5, 16388208), (6, 13656840), (8, 10242630), (9, 9104560), (10, 8194104), (12, 6828420), (15, 5462736), (16, 5121315), (18, 4552280), (20, 4097052), (24, 3414210), (30, 2731368), (36, 2276140), (40, 2048526), (45, 1820912), (48, 1707105), (60, 1365684), (72, 1138070), (73, 1122480), (80, 1024263), (90, 910456), (120, 682842), (144, 569035), (146, 561240), (180, 455228), (219, 374160), (240, 341421), (292, 280620), (360, 227614), (365, 224496), (438, 187080), (584, 140310), (657, 124720), (720, 113807), (730, 112248), (876, 93540), (1095, 74832), (1168, 70155), (1314, 62360), (1460, 56124), (1559, 52560), (1752, 46770), (2190, 37416), (2628, 31180), (2920, 28062), (3118, 26280), (3285, 24944), (3504, 23385), (4380, 18708), (4677, 17520), (5256, 15590), (5840, 14031), (6236, 13140), (6570, 12472), (7795, 10512), (8760, 9354)]