128341780

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{757}}^1$

素因数の和:953

約数の個数: 72

約数和(自身を含む): 315749448

約数和(自身を除く): 187407668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 173, 196, 245, 346, 490, 692, 757, 865, 980, 1211, 1514, 1730, 2422, 3028, 3460, 3785, 4844, 5299, 6055, 7570, 8477, 10598, 12110, 15140, 16954, 21196, 24220, 26495, 33908, 37093, 42385, 52990, 74186, 84770, 105980, 130961, 148372, 169540, 185465, 261922, 370930, 523844, 654805, 741860, 916727, 1309610, 1833454, 2619220, 3666908, 4583635, 6417089, 9167270, 12834178, 18334540, 25668356, 32085445, 64170890, 128341780]

約数ペア:

[(1, 128341780), (2, 64170890), (4, 32085445), (5, 25668356), (7, 18334540), (10, 12834178), (14, 9167270), (20, 6417089), (28, 4583635), (35, 3666908), (49, 2619220), (70, 1833454), (98, 1309610), (140, 916727), (173, 741860), (196, 654805), (245, 523844), (346, 370930), (490, 261922), (692, 185465), (757, 169540), (865, 148372), (980, 130961), (1211, 105980), (1514, 84770), (1730, 74186), (2422, 52990), (3028, 42385), (3460, 37093), (3785, 33908), (4844, 26495), (5299, 24220), (6055, 21196), (7570, 16954), (8477, 15140), (10598, 12110)]