128578842

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{73}}^1\times {\mathrm{1997}}^1$

素因数の和:2092

約数の個数: 72

約数和(自身を含む): 328674996

約数和(自身を除く): 200096154

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 49, 63, 73, 98, 126, 146, 147, 219, 294, 438, 441, 511, 657, 882, 1022, 1314, 1533, 1997, 3066, 3577, 3994, 4599, 5991, 7154, 9198, 10731, 11982, 13979, 17973, 21462, 27958, 32193, 35946, 41937, 64386, 83874, 97853, 125811, 145781, 195706, 251622, 291562, 293559, 437343, 587118, 874686, 880677, 1020467, 1312029, 1761354, 2040934, 2624058, 3061401, 6122802, 7143269, 9184203, 14286538, 18368406, 21429807, 42859614, 64289421, 128578842]

約数ペア:

[(1, 128578842), (2, 64289421), (3, 42859614), (6, 21429807), (7, 18368406), (9, 14286538), (14, 9184203), (18, 7143269), (21, 6122802), (42, 3061401), (49, 2624058), (63, 2040934), (73, 1761354), (98, 1312029), (126, 1020467), (146, 880677), (147, 874686), (219, 587118), (294, 437343), (438, 293559), (441, 291562), (511, 251622), (657, 195706), (882, 145781), (1022, 125811), (1314, 97853), (1533, 83874), (1997, 64386), (3066, 41937), (3577, 35946), (3994, 32193), (4599, 27958), (5991, 21462), (7154, 17973), (9198, 13979), (10731, 11982)]